Fix building, include the header instead of the source file

Builds only seemed to have been broken in some configurations, though.

Originally committed as revision 25499 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/oggparsevorbis.c

@@ -29,7 +29,7 @@
 #include "libavcodec/bytestream.h"
 #include "avformat.h"
 #include "oggdec.h"
-#include "vorbiscomment.c"
+#include "vorbiscomment.h"
 
 static int ogm_chapter(AVFormatContext *as, uint8_t *key, uint8_t *val)
 {