[BUG] Large number reception in the json format causes an exception

[wjsffzb]

version:1.6.2 os:windows10

[oceanlvr]

More details? please try not to delete the template issue of bug report.

[oceanlvr]

Please use the English description, or use both English and Chinese. It may help other people in the community.

[wjsffzb]

if MQTT response contain big number,use json format（8 bytes like 47348660069859329) accept will overflow and no hint.

MQTT的消息内容使用JSON格式接收时，碰到有超大数字（8字节长度，例如47348660069859329）时会溢出，导致结果异常

[ysfscream]

This issue has been fixed in the MQTTX v1.9.7 release. Thank you for your feedback.