Fix FLAC demuxer dependencies.

Patch by James Darnley <james darnley at gmail>

Originally committed as revision 22627 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/Makefile

@@ -69,7 +69,7 @@ OBJS-$(CONFIG_FFM_MUXER)                 += ffmenc.o
 OBJS-$(CONFIG_FILMSTRIP_DEMUXER)         += filmstripdec.o
 OBJS-$(CONFIG_FILMSTRIP_MUXER)           += filmstripenc.o
 OBJS-$(CONFIG_FLAC_DEMUXER)              += flacdec.o raw.o id3v1.o \
-                                            id3v2.o \
+                                            id3v2.o oggparsevorbis.o \
                                             vorbiscomment.o
 OBJS-$(CONFIG_FLAC_MUXER)                += flacenc.o vorbiscomment.o
 OBJS-$(CONFIG_FLIC_DEMUXER)              += flic.o