Fixed warning in GCC
Fixed warning in GCC

fayvlad/ArduinoJson,lono-devices/ArduinoJson,ELZo3/ArduinoJson,CanTireInnovations/ArduinoJson,spotman/ArduinoJson,janelia-arduino/ArduinoJson,weera00/ArduinoJson,janelia-arduino/ArduinoJson,lono-devices/ArduinoJson,firepick1/ArduinoJson,lono-devices/ArduinoJson,weera00/ArduinoJson,spotman/ArduinoJson,firepick1/ArduinoJson,chuz/ArduinoJson,peterpolidoro/ArduinoJson,hemantsangwan/Arduino-Json,bblanchon/ArduinoJson,alyf80/ArduinoJson,hassanabidpk/ArduinoJson,peterpolidoro/ArduinoJson,AndreyAyres/ArduinoJson,alyf80/ArduinoJson,venkatarajasekhar/ArduinoJson,peterpolidoro/ArduinoJson,0ddie/ArduinoJson,AndreyAyres/ArduinoJson,PeeJay/ArduinoJson,hemantsangwan/Arduino-Json,venusdharan/ArduinoJson,spotman/ArduinoJson,naveensuryakumar/json,alyf80/ArduinoJson,tirumalavan/ArduinoJson,bblanchon/ArduinoJson,hassanabidpk/ArduinoJson,venusdharan/ArduinoJson,firepick1/ArduinoJson,venkatarajasekhar/ArduinoJson,tirumalavan/ArduinoJson,CanTireInnovations/ArduinoJson,venusdharan/ArduinoJson,PeeJay/ArduinoJson,chuz/ArduinoJson,ELZo3/ArduinoJson,hassanabidpk/ArduinoJson,naveensuryakumar/json,venkatarajasekhar/ArduinoJson,0ddie/ArduinoJson,tirumalavan/ArduinoJson,fayvlad/ArduinoJson,janelia-arduino/ArduinoJson,AndreyAyres/ArduinoJson,bblanchon/ArduinoJson,CanTireInnovations/ArduinoJson,naveensuryakumar/json,weera00/ArduinoJson,hemantsangwan/Arduino-Json,ELZo3/ArduinoJson,chuz/ArduinoJson,PeeJay/ArduinoJson,peterpolidoro/ArduinoJson,janelia-arduino/ArduinoJson,fayvlad/ArduinoJson