Second half of fix to Mozilla BZ # 5000254: sanity check the floor 1 post list to reject files with repeated values that would result in floor line segments with zero length.
Second half of fix to Mozilla BZ # 5000254: sanity check the floor 1
post list to reject files with repeated values that would result in
floor line segments with zero length.


svn path=/trunk/vorbis/; revision=16182

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