[FFmpeg-cvslog] matroska: Fix use after free

[Dale Curtis]

ffmpeg | branch: release/0.7 | Dale Curtis <dalecurtis at chromium.org> | Thu Jan 10 11:05:29 2013 -0800| [c3ece52decafc4923aebe7fd74b274e9ebb1962e] | committer: Michael Niedermayer

matroska: Fix use after free

Signed-off-by: Dale Curtis <dalecurtis at chromium.org>
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>
(cherry picked from commit ae3d41636942cbc0236bad21ad06c65f4eb0f096)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c3ece52decafc4923aebe7fd74b274e9ebb1962e
---

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

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 2fe1db5..ac91f67 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1676,6 +1676,7 @@ 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++) {