Update BLITSineHardSync_sound.cpp
Update BLITSineHardSync_sound.cpp
fukuroder/BLIT-based_sinewave_hardsync,fukuroder/BLIT-based_sinewave_hardsync,fukuroder/BLIT-based_sinewave_hardsync,fukuroder/BLIT-based_sinewave_hardsync