matroskadec: merge only SSA packets together

fixes issue 2052
patch by David Conrad

Originally committed as revision 24004 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2010-07-02 16:41:38 +00:00 committed by Aurelien Jacobs
parent 7a617a8634
commit 41c1ccc332