ffmpeg: another memleak fix
ffmpeg: another memleak fix

kingsj/music-player,kingsj/music-player,albertz/music-player,albertz/music-player,kingsj/music-player,kingsj/music-player,albertz/music-player,albertz/music-player,kingsj/music-player,albertz/music-player,albertz/music-player