Fix minor memory leak.

Patch by Jindrich Makovicka, approved by mans.

Originally committed as revision 17021 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mpegts.c

@@ -334,6 +334,13 @@ static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
     pid = filter->pid;
     if (filter->type == MPEGTS_SECTION)
         av_freep(&filter->u.section_filter.section_buf);
+    else if (filter->type == MPEGTS_PES) {
+        /* referenced private data will be freed later in
+         * av_close_input_stream */
+        if (!((PESContext *)filter->u.pes_filter.opaque)->st) {
+            av_freep(&filter->u.pes_filter.opaque);
+        }
+    }
 
     av_free(filter);
     ts->pids[pid] = NULL;