[SCM] libav/experimental: Add a NULL pointer check to avcodec_close() this should prevent a segfault when closing without open.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit dccda293a0576d5414fafc0e95615c82a2f2399f
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Tue Nov 10 02:51:47 2009 +0000

    Add a NULL pointer check to avcodec_close() this should prevent a segfault
    when closing without open.
    
    Originally committed as revision 20495 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 2f18848..ddd1160 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -675,7 +675,7 @@ int avcodec_close(AVCodecContext *avctx)
 
     if (HAVE_THREADS && avctx->thread_opaque)
         avcodec_thread_free(avctx);
-    if (avctx->codec->close)
+    if (avctx->codec && avctx->codec->close)
         avctx->codec->close(avctx);
     avcodec_default_free_buffers(avctx);
     av_freep(&avctx->priv_data);

-- 
Libav/FFmpeg packaging