From 2facb10f705ab3f34b7a050107d7556b388c068c Mon Sep 17 00:00:00 2001
From: Dale Curtis <dalecurtis@chromium.org>
Date: Thu, 10 Jan 2013 11:05:29 -0800
Subject: [PATCH] matroska: Fix use after free

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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavformat/matroskadec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 45bafe5ec4..710883c28e 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1720,6 +1720,7 @@ 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++) {