no longer crashes on raspberry pi
no longer crashes on raspberry pi

Tested at 60fps cap with 300 pixels. Averages around 40-50 fps on the Raspberry Pi 3.

This fix removes overflow tracking, but prevents the program from crashing after a single overflow.
joeybab3/audio-reactive-led-strip,scottlawsonbc/audio-reactive-led-strip,scottlawsonbc/audio-reactive-led-strip,joeybab3/audio-reactive-led-strip