From 1afd7a118fd71536971f991b823c89f1c9e87509 Mon Sep 17 00:00:00 2001
From: Janne Grunau <janne-libav@jannau.net>
Date: Tue, 9 Oct 2012 15:41:24 +0200
Subject: [PATCH] af_channelmap: free old extended_data on reallocation

Prevents writes to freed memory and the leak of the old extended data.
Fixes CID732303.
---
 libavfilter/af_channelmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/af_channelmap.c b/libavfilter/af_channelmap.c
index 3e945d6e91..405a9c2c2f 100644
--- a/libavfilter/af_channelmap.c
+++ b/libavfilter/af_channelmap.c
@@ -338,8 +338,8 @@ static int channelmap_filter_samples(AVFilterLink *inlink, AVFilterBufferRef *bu
             if (buf->extended_data == buf->data) {
                 buf->extended_data = new_extended_data;
             } else {
-                buf->extended_data = new_extended_data;
                 av_free(buf->extended_data);
+                buf->extended_data = new_extended_data;
             }
         } else if (buf->extended_data != buf->data) {
             av_free(buf->extended_data);