From 52aed19307ee0768b03a620005c4b2b5fda621c6 Mon Sep 17 00:00:00 2001
From: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Date: Tue, 22 Oct 2013 19:40:05 +0100
Subject: [PATCH] avfiltergraph: Properly handle memory allocation failure

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
---
 libavfilter/avfiltergraph.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 2db2900ea8..506d79ec71 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -392,6 +392,19 @@ static int can_merge_formats(AVFilterFormats *a_arg,
         return 1;
     a = clone_filter_formats(a_arg);
     b = clone_filter_formats(b_arg);
+
+    if (!a || !b) {
+        if (a)
+            av_freep(&a->formats);
+        if (b)
+            av_freep(&b->formats);
+
+        av_freep(&a);
+        av_freep(&b);
+
+        return 0;
+    }
+
     if (is_sample_rate) {
         ret = ff_merge_samplerates(a, b);
     } else {