fix memory leaks

Author: mbkma

applets/clock/clock.c

@@ -822,6 +822,21 @@ destroy_clock (GtkWidget * widget, ClockData *cd)
                 cd->systz = NULL;
         }
 
+        if (cd->clock_group) {
+                g_object_unref (cd->clock_group);
+                cd->clock_group = NULL;
+        }
+
+        if (cd->prefs_window) {
+                gtk_widget_destroy (cd->prefs_window);
+                cd->prefs_window = NULL;
+        }
+
+        if (cd->set_time_window) {
+                gtk_widget_destroy (cd->set_time_window);
+                cd->set_time_window = NULL;
+        }
+
         if (cd->cities_store) {
                 g_object_unref (cd->cities_store);
                 cd->cities_store = NULL;

mate-panel/panel-menu-bar.c

@@ -291,9 +291,14 @@ static void panel_menu_bar_finalize (GObject* object)
 
 	if (menubar->priv->settings != NULL)
 	{
+		g_signal_handlers_disconnect_by_func (menubar->priv->settings,
+		                                      panel_menu_bar_update_visibility,
+		                                      menubar);
 		g_object_unref (menubar->priv->settings);
 		menubar->priv->settings = NULL;
 	}
+
+	G_OBJECT_CLASS (panel_menu_bar_parent_class)->finalize (object);
 }
 
 static void panel_menu_bar_class_init(PanelMenuBarClass* klass)