From a2816230c5c0a8fc72bc0163b7d21a96b194d87a Mon Sep 17 00:00:00 2001
From: Janne Grunau <janne-libav@jannau.net>
Date: Mon, 11 Mar 2013 16:24:36 +0100
Subject: [PATCH] avframe: call release_buffer only if it is set

AVCodecContext release_buffer() shall be NULL for audio codecs using
get_buffer. The backward compatibility code hence have to check before
calling it.
---
 libavcodec/utils.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 0106b91200..b4c294e0de 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -535,7 +535,8 @@ typedef struct CompatReleaseBufPriv {
 static void compat_free_buffer(void *opaque, uint8_t *data)
 {
     CompatReleaseBufPriv *priv = opaque;
-    priv->avctx.release_buffer(&priv->avctx, &priv->frame);
+    if (priv->avctx.release_buffer)
+        priv->avctx.release_buffer(&priv->avctx, &priv->frame);
     av_freep(&priv);
 }