Fix wrong comment.

Patch by Steve Lhomme % slhomme A divxcorp P com %
Original thread:
Date: Fri, 10 Nov 2006 15:29:50 +0100
Subject: [Ffmpeg-devel] [PATCH] fix a comment

Originally committed as revision 6965 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/matroska.c

@@ -2383,7 +2383,7 @@ matroska_parse_blockgroup (MatroskaDemuxContext *matroska,
                     break;
                 origdata = data;
 
-                /* first byte(s): blocknum */
+                /* first byte(s): tracknum */
                 if ((n = matroska_ebmlnum_uint(data, size, &num)) < 0) {
                     av_log(matroska->ctx, AV_LOG_ERROR,
                            "EBML block data error\n");