fixup_sample should only fix loopstart if it is below sample start, not if they are equal.
fixup_sample should only fix loopstart if it is below sample start, not if they are equal.

Signed-off-by: Marcus Weseloh <247731c75f3b277594afe05f8b1d0ee049da0b08@weseloh.cc>

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