MGASA-2019-0121 Updated live, mplayer, vlc packages fix security vulnerability

The updated live, mplayer, vlc packages fix security vulnerabilities: liblivemedia in Live555 before 2019.02.03 mishandles the termination of an RTSP stream after RTP/RTCP-over-RTSP has been set up, which could lead to a Use-After-Free error that causes the RTSP server to crash Segmentation fault...