Make LinearFifo not crash when discarding from empty buffer
Previously if a LinearFifo was empty and discard was called
an unsigned overflow would occur. However it is safe to perform
this overflow as a bitwise & operation with 0xFFFFFFFFFFFFFF is a noop
eab51b7785Ian Simonson committed on 9/27/2020, 9:46:39 AM· committed by Andrew Kelleyparented357f9