From 1dc42050185d63c1de5d16146fbaee92640af187 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 avfilter_ref_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 dc7604c52a..b3143229b1 100644
--- a/libavfilter/vf_vflip.c
+++ b/libavfilter/vf_vflip.c
@@ -70,6 +70,9 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *inpicref)
     AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
     int i;
 
+    if (!outpicref)
+        return AVERROR(ENOMEM);
+
     for (i = 0; i < 4; i ++) {
         int vsub = i == 1 || i == 2 ? flip->vsub : 0;
 
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