Compile Warning

[physnoct]

/home/user/.arduino15/packages/XMegaForArduino/hardware/avr/0.9.2/cores/xmega/wiring_analog.c: In function 'analogReadDeltaWithGain':
/home/user/.arduino15/packages/XMegaForArduino/hardware/avr/0.9.2/cores/xmega/wiring_analog.c:400:15: warning: comparison is always true due to limited range of data type [-Wtype-limits]
if(negpin >= 0 && negpin <= 3 && gain != ADC_CH_GAIN_1X_gc) // allow this IF gain is 1X
^~
/home/user/.arduino15/packages/XMegaForArduino/hardware/avr/0.9.2/cores/xmega/wiring_analog.c:404:20: warning: comparison is always true due to limited range of data type [-Wtype-limits]
else if(negpin >= 0 && negpin <= 3)