Fix adding known legacy items to Xfconf

plugins/statusnotifier/sn-config.c

@@ -523,7 +523,7 @@ sn_config_set_property (GObject      *object,
               tmp = g_ptr_array_index (array, i);
               g_assert (G_VALUE_HOLDS_STRING (tmp));
               name = g_value_dup_string (tmp);
-              config->known_items = g_list_append (config->known_legacy_items, name);
+              config->known_legacy_items = g_list_append (config->known_legacy_items, name);
             }
         }
       g_signal_emit (G_OBJECT (config), sn_config_signals[ITEM_LIST_CHANGED], 0);

plugins/statusnotifier/sn-plugin.c

@@ -243,6 +243,12 @@ sn_plugin_item_added (SnPlugin *plugin,
   gtk_widget_show (button);
 }
 
+void
+sn_plugin_legacy_item_added (SnPlugin    *plugin,
+                             const gchar *name)
+{
+  sn_config_add_known_legacy_item (plugin->config, name);
+}
 
 
 static void

plugins/statusnotifier/sn-plugin.h

@@ -77,6 +77,9 @@ GType                  sn_plugin_get_type                      (void) G_GNUC_CON
 
 void                   sn_plugin_register_type                 (XfcePanelTypeModule     *panel_type_module);
 
+void                   sn_plugin_legacy_item_added             (SnPlugin                *plugin,
+                                                                const gchar             *name);
+
 G_END_DECLS
 
 #endif /* !__SN_PLUGIN_H__ */

plugins/statusnotifier/systray.c

@@ -632,7 +632,7 @@ systray_plugin_names_get_hidden (SnPlugin      *plugin,
     {
       /* add the new name */
       plugin->names_ordered = g_slist_prepend (plugin->names_ordered, g_strdup (name));
-      g_object_notify (G_OBJECT (plugin), "known-legacy-items");
+      sn_plugin_legacy_item_added (plugin, name);
 
       /* do not hide the icon */
       return FALSE;