Suppress warnings

[ghost]

Suppress warnings

It suppresses compilation warnings.

warning messages

\AppData\Local\Temp\build6674025c445f92d0b07185e4e4080804.tmp\sketch\temperature.cpp: In static member function 'static void Temperature::checkExtruderAutoFans()':

\AppData\Local\Temp\build6674025c445f92d0b07185e4e4080804.tmp\sketch\temperature.cpp:482:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

     for (int8_t f = 0; f < COUNT(fanPin); f++) {

                          ^

\AppData\Local\Temp\build6674025c445f92d0b07185e4e4080804.tmp\sketch\Marlin_main.cpp: In function 'idle':

\AppData\Local\Temp\build6674025c445f92d0b07185e4e4080804.tmp\sketch\Marlin_main.cpp:8492:11: warning: 'max_temp' may be used uninitialized in this function [-Wmaybe-uninitialized]

           MAX3(max_temp, thermalManager.degTargetBed(), thermalManager.degBed())

           ^

\AppData\Local\Temp\build6674025c445f92d0b07185e4e4080804.tmp\sketch\Marlin_main.cpp:8490:13: note: 'max_temp' was declared here

       float max_temp =

             ^