GtkAboutDialog: Use a setter for wrap-license
GtkAboutDialog: Use a setter for wrap-license

This avoids redundant notification.

davidgumberg/gtk,alexlarsson/gtk,davidgumberg/gtk,alexlarsson/gtk,ahodesuka/gtk,Adamovskiy/gtk,ahodesuka/gtk,chergert/gtk,jigpu/gtk,Lyude/gtk-,Lyude/gtk-,ahodesuka/gtk,davidgumberg/gtk,grubersjoe/adwaita,jessevdk/gtk,grubersjoe/adwaita,jigpu/gtk,davidgumberg/gtk,ahodesuka/gtk,jigpu/gtk,jigpu/gtk,grubersjoe/adwaita,davidgumberg/gtk,jessevdk/gtk,jadahl/gtk,jadahl/gtk,jadahl/gtk,Adamovskiy/gtk,jadahl/gtk,grubersjoe/adwaita,ahodesuka/gtk,Lyude/gtk-,jessevdk/gtk,jadahl/gtk,chergert/gtk,chergert/gtk,jigpu/gtk,ahodesuka/gtk,grubersjoe/adwaita,davidgumberg/gtk,alexlarsson/gtk,jessevdk/gtk,davidgumberg/gtk,grubersjoe/adwaita,jessevdk/gtk,alexlarsson/gtk,jessevdk/gtk,Lyude/gtk-,jadahl/gtk,Adamovskiy/gtk,ahodesuka/gtk,Lyude/gtk-,jigpu/gtk,Adamovskiy/gtk,jessevdk/gtk,chergert/gtk,Adamovskiy/gtk,alexlarsson/gtk,chergert/gtk,chergert/gtk,grubersjoe/adwaita,chergert/gtk,jigpu/gtk,jigpu/gtk,alexlarsson/gtk,jadahl/gtk,Lyude/gtk-,Lyude/gtk-,Lyude/gtk-,davidgumberg/gtk,chergert/gtk,Adamovskiy/gtk,ahodesuka/gtk,Adamovskiy/gtk,alexlarsson/gtk,grubersjoe/adwaita,Adamovskiy/gtk,alexlarsson/gtk,jadahl/gtk