Another instance of an audio object which did nothing when a NULL block arrives, even when internal state is time-dependent...
This fix keeps the fade process going even if NULL audio blocks are passed in, so you can e.g. preset a fade to a known value before starting its input. Also traps a potential divide-by-zero error if a fade of 0.0 milliseconds is requested.
Another instance of an audio object which did nothing when a NULL block arrives, even when internal state is time-dependent...
This fix keeps the fade process going even if NULL audio blocks are passed in, so you can e.g. preset a fade to a known value before starting its input. Also traps a potential divide-by-zero error if a fade of 0.0 milliseconds is requested.