ui/dbus: Properly dispose touch/mouse dbus objects

Fixes: 142ca628a7 ("ui: add a D-Bus display backend")
Fixes: de9f844ce2 ("ui/dbus: Expose a touch device interface")

Signed-off-by: Bilal Elmoussaoui <belmouss@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230901124507.94087-1-belmouss@redhat.com>

ui/dbus-console.c

@@ -150,6 +150,8 @@ dbus_display_console_dispose(GObject *object)
     DBusDisplayConsole *ddc = DBUS_DISPLAY_CONSOLE(object);
 
     unregister_displaychangelistener(&ddc->dcl);
+    g_clear_object(&ddc->iface_touch);
+    g_clear_object(&ddc->iface_mouse);
     g_clear_object(&ddc->iface_kbd);
     g_clear_object(&ddc->iface);
     g_clear_pointer(&ddc->listeners, g_hash_table_unref);