File ffmpeg-CVE-2020-22049.patch of Package ffmpeg

From 373c1c9b691fd4c6831b3a114a006b639304c2af Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Date: Tue, 7 Jan 2020 14:55:48 +0100
Subject: [PATCH] avformat/wtvdec: Fix memleak when reading header fails

Fixes #8314.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/wtvdec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c
index 706e8ca38d..92629bb31b 100644
--- a/libavformat/wtvdec.c
+++ b/libavformat/wtvdec.c
@@ -993,8 +993,10 @@ static int read_header(AVFormatContext *s)
     }
 
     ret = parse_chunks(s, SEEK_TO_DATA, 0, 0);
-    if (ret < 0)
+    if (ret < 0) {
+        wtvfile_close(wtv->pb);
         return ret;
+    }
     avio_seek(wtv->pb, -32, SEEK_CUR);
 
     timeline_pos = avio_tell(s->pb); // save before opening another file
-- 
2.32.0