gtk3 test: suppress a warning
gtk3 test: suppress a warning

    (eval): line 3
       Gtk-CRITICAL **:gtk_widget_get_can_focus: assertion 'GTK_IS_WIDGET (widget)' failed

kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2