Remove a FIXME
Remove a FIXME

I don't see any 'allocation' of preset. And ALL public synth functions have a mutex lock which might potentially block when called from synth context, but only then if the client app pessimizes this situation by extensively calling the synth from outside the synth context.

FluidSynth/fluidsynth,FluidSynth/fluidsynth,FluidSynth/fluidsynth,FluidSynth/fluidsynth