[DHCP] change return type int to uint8_t

[Rotzbua]

return type is just positive and does not use more than 1 byte

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[github-actions[bot]]

Memory usage change @ 74a5349e8bca8db9b4467588e69395a8f5099cfa

Board	flash	%	RAM for global variables	%
arduino:avr:leonardo	:green_heart: -16 - 0	-0.06 - 0.0	0 - 0	0.0 - 0.0
arduino:avr:mega	:green_heart: -14 - 0	-0.01 - 0.0	0 - 0	0.0 - 0.0
arduino:avr:nano	:green_heart: -16 - 0	-0.05 - 0.0	0 - 0	0.0 - 0.0
arduino:megaavr:nona4809	:green_heart: -16 - 0	-0.03 - 0.0	0 - 0	0.0 - 0.0
arduino:megaavr:uno2018	:green_heart: -16 - 0	-0.03 - 0.0	0 - 0	0.0 - 0.0
arduino:sam:arduino_due_x_dbg	:small_red_triangle: 0 - +8	0.0 - 0.0	N/A	N/A
arduino:samd:arduino_zero_edbg	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkr1000	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrfox1200	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrgsm1400	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrnb1500	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrvidor4000	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrwan1300	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrwan1310	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrwifi1010	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrzero	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:nano_33_iot	:grey_question: -4 - +4	-0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/AdvancedChatServer flash	%	examples/AdvancedChatServer RAM for global variables	%	examples/BarometricPressureWebServer flash	%	examples/BarometricPressureWebServer RAM for global variables	%	examples/ChatServer flash	%	examples/ChatServer RAM for global variables	%	examples/DhcpAddressPrinter flash	%	examples/DhcpAddressPrinter RAM for global variables	%	examples/DhcpChatServer flash	%	examples/DhcpChatServer RAM for global variables	%	examples/LinkStatus flash	%	examples/LinkStatus RAM for global variables	%	examples/TelnetClient flash	%	examples/TelnetClient RAM for global variables	%	examples/UDPSendReceiveString flash	%	examples/UDPSendReceiveString RAM for global variables	%	examples/UdpNtpClient flash	%	examples/UdpNtpClient RAM for global variables	%	examples/WebClient flash	%	examples/WebClient RAM for global variables	%	examples/WebClientRepeating flash	%	examples/WebClientRepeating RAM for global variables	%	examples/WebServer flash	%	examples/WebServer RAM for global variables	%
arduino:avr:leonardo	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-16	-0.06	0	0.0	-10	-0.03	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-10	-0.03	0	0.0	-8	-0.03	0	0.0	-8	-0.03	0	0.0	0	0.0	0	0.0
arduino:avr:mega	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-14	-0.01	0	0.0	-10	-0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-8	-0.0	0	0.0	-8	-0.0	0	0.0	-8	-0.0	0	0.0	0	0.0	0	0.0
arduino:avr:nano	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-16	-0.05	0	0.0	-10	-0.03	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-10	-0.03	0	0.0	-8	-0.03	0	0.0	-8	-0.03	0	0.0	0	0.0	0	0.0
arduino:megaavr:nona4809	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-16	-0.03	0	0.0	-10	-0.02	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-10	-0.02	0	0.0	-2	-0.0	0	0.0	-8	-0.02	0	0.0	0	0.0	0	0.0
arduino:megaavr:uno2018	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-16	-0.03	0	0.0	-10	-0.02	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	-10	-0.02	0	0.0	-2	-0.0	0	0.0	-8	-0.02	0	0.0	0	0.0	0	0.0
arduino:sam:arduino_due_x_dbg	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	8	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	8	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A
arduino:samd:arduino_zero_edbg	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkr1000	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrfox1200	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrgsm1400	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrnb1500	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrvidor4000	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrwan1300	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrwan1310	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrwifi1010	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrzero	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0
arduino:samd:nano_33_iot	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	4	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	4	0.0	0	0.0	-4	-0.0	0	0.0	-4	-0.0	0	0.0	0	0.0	0	0.0

Click for full report CSV

Board,examples/AdvancedChatServer<br>flash,%,examples/AdvancedChatServer<br>RAM for global variables,%,examples/BarometricPressureWebServer<br>flash,%,examples/BarometricPressureWebServer<br>RAM for global variables,%,examples/ChatServer<br>flash,%,examples/ChatServer<br>RAM for global variables,%,examples/DhcpAddressPrinter<br>flash,%,examples/DhcpAddressPrinter<br>RAM for global variables,%,examples/DhcpChatServer<br>flash,%,examples/DhcpChatServer<br>RAM for global variables,%,examples/LinkStatus<br>flash,%,examples/LinkStatus<br>RAM for global variables,%,examples/TelnetClient<br>flash,%,examples/TelnetClient<br>RAM for global variables,%,examples/UDPSendReceiveString<br>flash,%,examples/UDPSendReceiveString<br>RAM for global variables,%,examples/UdpNtpClient<br>flash,%,examples/UdpNtpClient<br>RAM for global variables,%,examples/WebClient<br>flash,%,examples/WebClient<br>RAM for global variables,%,examples/WebClientRepeating<br>flash,%,examples/WebClientRepeating<br>RAM for global variables,%,examples/WebServer<br>flash,%,examples/WebServer<br>RAM for global variables,%
arduino:avr:leonardo,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-16,-0.06,0,0.0,-10,-0.03,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-10,-0.03,0,0.0,-8,-0.03,0,0.0,-8,-0.03,0,0.0,0,0.0,0,0.0
arduino:avr:mega,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-14,-0.01,0,0.0,-10,-0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-8,-0.0,0,0.0,-8,-0.0,0,0.0,-8,-0.0,0,0.0,0,0.0,0,0.0
arduino:avr:nano,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-16,-0.05,0,0.0,-10,-0.03,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-10,-0.03,0,0.0,-8,-0.03,0,0.0,-8,-0.03,0,0.0,0,0.0,0,0.0
arduino:megaavr:nona4809,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-16,-0.03,0,0.0,-10,-0.02,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-10,-0.02,0,0.0,-2,-0.0,0,0.0,-8,-0.02,0,0.0,0,0.0,0,0.0
arduino:megaavr:uno2018,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-16,-0.03,0,0.0,-10,-0.02,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,-10,-0.02,0,0.0,-2,-0.0,0,0.0,-8,-0.02,0,0.0,0,0.0,0,0.0
arduino:sam:arduino_due_x_dbg,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,8,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,8,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A
arduino:samd:arduino_zero_edbg,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkr1000,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrfox1200,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrgsm1400,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrnb1500,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrvidor4000,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrwan1300,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrwan1310,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrwifi1010,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrzero,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0
arduino:samd:nano_33_iot,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,4,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,4,0.0,0,0.0,-4,-0.0,0,0.0,-4,-0.0,0,0.0,0,0.0,0,0.0