

Fix a divide by zero in noise_hybridmp due to faulty spectrum wrapping
around Bark 0.

svn path=/trunk/vorbis/; revision=4018

ShiftMediaProject/vorbis,ksophocleous/vorbis,eidy/vorbis,felipebetancur/vorbis,erikd/vorbis,mwgoldsmith/vorbis,ksophocleous/vorbis,mwgoldsmith/vorbis,erikd/vorbis,mwgoldsmith/vorbis,youfearm3/vorbis,ksophocleous/vorbis,youfearm3/vorbis,mwgoldsmith/vorbis,erikd/vorbis,erikd/vorbis,nicolaichuk/vorbis,ksophocleous/vorbis,ShiftMediaProject/vorbis,eidy/vorbis,nicolaichuk/vorbis,felipebetancur/vorbis,eidy/vorbis,felipebetancur/vorbis,nicolaichuk/vorbis,emscripten-ports/Vorbis,emscripten-ports/Vorbis,youfearm3/vorbis,nicolaichuk/vorbis,ShiftMediaProject/vorbis,ShiftMediaProject/vorbis,emscripten-ports/Vorbis,youfearm3/vorbis,emscripten-ports/Vorbis,felipebetancur/vorbis,ShiftMediaProject/vorbis,ShiftMediaProject/vorbis,eidy/vorbis