artistalbumwidget: Prevents fatal error when discbox is None
Introduces an if statement in gnomemusic/widgets/artistalbumwidget.py to make sure that the discbox is not None before setting the discbox.props.show_disc_label.
Fixes #430 (closed)
Introduces an if statement in gnomemusic/widgets/artistalbumwidget.py to make sure that the discbox is not None before setting the discbox.props.show_disc_label.
Fixes #430 (closed)