quartztext: add basic font-fallback mechanism instead of crashing (close #9369)
quartztext: add basic font-fallback mechanism instead of crashing (close #9369)

(cherry picked from commit 13e35edc81b6eb03e50c2911723ab6e8d9af89f0)

vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,jomanmuk/vlc-2.1,vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,vlc-mirror/vlc-2.1