From f19c58b4cf0be11cdcfa609ca78265e4b4206091 Mon Sep 17 00:00:00 2001
From: Aurelien Jacobs <aurel@gnuage.org>
Date: Fri, 31 Dec 2010 00:06:25 +0000
Subject: [PATCH] free subtitle_header before overwriting it to avoid memleak

Originally committed as revision 26176 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/utils.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index d82f589181..ce7473587e 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -505,6 +505,11 @@ int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
         avcodec_set_dimensions(avctx, 0, 0);
     }
 
+    /* if the decoder init function was already called previously,
+       free the already allocated subtitle_header before overwriting it */
+    if (codec->decode)
+        av_freep(&avctx->subtitle_header);
+
 #define SANE_NB_CHANNELS 128U
     if (avctx->channels > SANE_NB_CHANNELS) {
         ret = AVERROR(EINVAL);