From 7333799de5fca7fe8d21424557362f5eef0b9e55 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sun, 17 Sep 2017 02:42:11 +0200
Subject: [PATCH] avcodec/pngdec: Clean up on av_frame_ref() failure

Fixes: memleak
Fixes: 3203/clusterfuzz-testcase-minimized-4514553595428864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5480e82d77770e81e897a8c217f3c7f0c13a6de1)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/pngdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 52b872a06a..7f0d416683 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -1358,7 +1358,7 @@ static int decode_frame_png(AVCodecContext *avctx,
     }
 
     if ((ret = av_frame_ref(data, s->picture.f)) < 0)
-        return ret;
+        goto the_end;
 
     *got_frame = 1;