plugins.ustreamtv: Use generators instead of dicts.
plugins.ustreamtv: Use generators instead of dicts.

melmorabity/streamlink,Klaudit/livestreamer,fishscene/streamlink,streamlink/streamlink,flijloku/livestreamer,sbstp/streamlink,okaywit/livestreamer,ethanhlc/streamlink,gravyboat/streamlink,Dobatymo/livestreamer,melmorabity/streamlink,back-to/streamlink,caorong/livestreamer,Feverqwe/livestreamer,flijloku/livestreamer,fishscene/streamlink,gtmanfred/livestreamer,back-to/streamlink,hmit/livestreamer,bastimeyer/streamlink,javiercantero/streamlink,Masaz-/livestreamer,caorong/livestreamer,Klaudit/livestreamer,mmetak/streamlink,wlerin/streamlink,gravyboat/streamlink,wolftankk/livestreamer,blxd/livestreamer,chhe/streamlink,lyhiving/livestreamer,Dobatymo/livestreamer,derrod/livestreamer,chhe/streamlink,chhe/livestreamer,beardypig/streamlink,wlerin/streamlink,programming086/livestreamer,intact/livestreamer,chrippa/livestreamer,sbstp/streamlink,jtsymon/livestreamer,ethanhlc/streamlink,intact/livestreamer,charmander/livestreamer,mmetak/streamlink,chhe/livestreamer,chrippa/livestreamer,okaywit/livestreamer,javiercantero/streamlink,blxd/livestreamer,programming086/livestreamer,wolftankk/livestreamer,derrod/livestreamer,Feverqwe/livestreamer,Saturn/livestreamer,hmit/livestreamer,jtsymon/livestreamer,gtmanfred/livestreamer,bastimeyer/streamlink,lyhiving/livestreamer,beardypig/streamlink,streamlink/streamlink,charmander/livestreamer,Saturn/livestreamer,Masaz-/livestreamer