Fix warnings found with "--warnings more"

[Noltari]

Fix warnings found with "--warnings more":

/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp: In member function 'void ELECHOUSE_CC1101::Reset()':
/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp:149:3: error: this 'while' clause does not guard... [-Werror=misleading-indentation]
   while(digitalRead(MISO_PIN));
   ^~~~~
/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp:150:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
  digitalWrite(SS_PIN, HIGH);
  ^~~~~~~~~~~~
/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp: In member function 'void ELECHOUSE_CC1101::Split_MDMCFG1()':
/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp:983:5: error: unused variable 's2' [-Werror=unused-variable]
 int s2 = 0;
     ^~
/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp: In member function 'void ELECHOUSE_CC1101::setPA(int)':
/home/runner/Arduino/libraries/SmartRC-CC1101-Driver-Lib/ELECHOUSE_CC1101_SRC_DRV.cpp:445:5: error: 'a' may be used uninitialized in this function [-Werror=maybe-uninitialized]
 int a;
     ^
cc1plus: some warnings being treated as errors

[Legion2]

These warnings are treated as errors in my CI arduino builds (I'm not sure why and where this is configured) and now my tests fail on my main branch https://github.com/Legion2/Somfy_Remote_Lib/actions/runs/6057348260/job/16439196101?pr=31#step:3:508