From 8f3a3ce7307e39a030db3bf8d2e525b21e039ca2 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Sun, 15 Jul 2012 11:16:53 +0200
Subject: lavfi: check all ff_get_video_buffer() calls for errors.

---
 libavfilter/vf_vflip.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libavfilter/vf_vflip.c')

diff --git a/libavfilter/vf_vflip.c b/libavfilter/vf_vflip.c
index b3143229b1..f0fb32aadc 100644
--- a/libavfilter/vf_vflip.c
+++ b/libavfilter/vf_vflip.c
@@ -52,6 +52,9 @@ static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms,
         return ff_default_get_video_buffer(link, perms, w, h);
 
     picref = ff_get_video_buffer(link->dst->outputs[0], perms, w, h);
+    if (!picref)
+        return NULL;
+
     for (i = 0; i < 4; i ++) {
         int vsub = i == 1 || i == 2 ? flip->vsub : 0;
 
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