ffmpeg: Fix CVE-2022-48434

Add a patch to fix CVE-2022-48434 which allows attackers to trigger a
use-after-free and execute arbitrary code in some circumstances

Link: https://ubuntu.com/security/CVE-2022-48434
Link: https://nvd.nist.gov/vuln/detail/CVE-2022-48434



Signed-off-by: Nikhil R <nikhilar2410@gmail.com>
Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
Signed-off-by: Nikhil R <nikhilar2410@gmail.com>
Signed-off-by: Nikhil R <nikhilar2410@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>