ffmpeg | branch: release/1.0 | Dale Curtis <[email protected]> | Thu Jan 
10 11:05:29 2013 -0800| [85b1ce977bd5d477cd47d0942e1a09f0a56e6778] | committer: 
Michael Niedermayer

matroska: Fix use after free

Signed-off-by: Dale Curtis <[email protected]>
Signed-off-by: Luca Barbato <[email protected]>
(cherry picked from commit ae3d41636942cbc0236bad21ad06c65f4eb0f096)

Signed-off-by: Michael Niedermayer <[email protected]>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=85b1ce977bd5d477cd47d0942e1a09f0a56e6778
---

 libavformat/matroskadec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 44c1a8f..59130f1 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1880,6 +1880,7 @@ static int matroska_deliver_packet(MatroskaDemuxContext 
*matroska,
  */
 static void matroska_clear_queue(MatroskaDemuxContext *matroska)
 {
+    matroska->prev_pkt = NULL;
     if (matroska->packets) {
         int n;
         for (n = 0; n < matroska->num_packets; n++) {
@@ -2393,7 +2394,6 @@ static int matroska_read_seek(AVFormatContext *s, int 
stream_index,
         avio_seek(s->pb, st->index_entries[st->nb_index_entries-1].pos, 
SEEK_SET);
         matroska->current_id = 0;
         while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
-            matroska->prev_pkt = NULL;
             matroska_clear_queue(matroska);
             if (matroska_parse_cluster(matroska) < 0)
                 break;

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