SUSE-SU-2019:2463-2 Security update for SDL2

This update for SDL2 fixes the following issues: Security issues fixed: - CVE-2019-13616: Fixed heap-based buffer over-read in BlitNtoN in video/SDLblitN.c bsc1141844. - CVE-2019-13626: Fixed integer overflow in IMAADPCMdecode in audio/SDLwave.c bsc1142031...