split _filter_dup()
split _filter_dup()

simplify logic / exit condition

Azzuro/libbluray,UIKit0/libbluray,mwgoldsmith/bluray,koying/libbluray,Distrotech/libbluray,tourettes/libbluray,Distrotech/libbluray,vlc-mirror/libbluray,ace20022/libbluray,Azzuro/libbluray,vlc-mirror/libbluray,mwgoldsmith/bluray,ace20022/libbluray,EdwardNewK/libbluray,Azzuro/libbluray,ShiftMediaProject/libbluray,tourettes/libbluray,UIKit0/libbluray,UIKit0/libbluray,EdwardNewK/libbluray,ShiftMediaProject/libbluray,vlc-mirror/libbluray,EdwardNewK/libbluray,ShiftMediaProject/libbluray,mwgoldsmith/bluray,koying/libbluray,UIKit0/libbluray,mwgoldsmith/bluray,Azzuro/libbluray,ace20022/libbluray,tourettes/libbluray,koying/libbluray,tourettes/libbluray,EdwardNewK/libbluray,Distrotech/libbluray,vlc-mirror/libbluray,ace20022/libbluray,koying/libbluray,Distrotech/libbluray,ShiftMediaProject/libbluray