Remove extra empty line in "impl<O: Upcast<"
Remove extra empty line in "impl<O: Upcast<"

gtk-rs/gir,gkoz/gir,EPashkin/gir,GuillaumeGomez/gir,EPashkin/gir,gtk-rs/gir,gtk-rs/gir,GuillaumeGomez/gir,GuillaumeGomez/gir,gkoz/gir