build issue with OSS on OpenSolaris and kfreebsd-*
build issue with OSS on OpenSolaris and kfreebsd-*

Hopefully fixes both: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690006 and 98007640266ea1810f36307da64f3d355a2a49f4

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