From 8d858674fd1b114958c909065734b5df381ef356 Mon Sep 17 00:00:00 2001
From: Nablet Developer <sdk@nablet.com>
Date: Wed, 5 Oct 2016 09:34:25 -0400
Subject: [PATCH] avcodec/qsvenc_h264: fix segfault when a53 SEI is not
 available

Signed-off-by: Nablet Developer <sdk@nablet.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/qsvenc_h264.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/qsvenc_h264.c b/libavcodec/qsvenc_h264.c
index c1f6003f60..f5b01bb992 100644
--- a/libavcodec/qsvenc_h264.c
+++ b/libavcodec/qsvenc_h264.c
@@ -53,7 +53,7 @@ static int qsv_h264_set_encode_ctrl(AVCodecContext *avctx,
         int res;
 
         res = ff_alloc_a53_sei(frame, sizeof(mfxPayload) + 2, (void**)&payload, &sei_size);
-        if (res < 0)
+        if (res < 0 || !payload)
             return res;
 
         sei_data = (mfxU8*)(payload + 1);