Fixes the following security issues: - CVE-2020-35964: track_header in libavformat/vividas.c in FFmpeg 4.3.1 has an out-of-bounds write because of incorrect extradata packing. - CVE-2020-35965: decode_frame in libavcodec/exr.c in FFmpeg 4.3.1 has an out-of-bounds write because of errors in calculations of when to perform memset zero operations. Removed patch which was applied upstream:ca55240b8cChangelog: http://git.videolan.org/?p=ffmpeg.git;a=blob;f=Changelog;h=28d79ea1aed0a59f43ee922f5b6efa82dc7e2b18;hb=refs/heads/release/4.3 Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de> Signed-off-by: Peter Korsgaard <peter@korsgaard.com> (cherry picked from commit2a3cfb2381) [Peter: mark as security fix, extend commit message] Signed-off-by: Peter Korsgaard <peter@korsgaard.com>