[gnc-plugin] g_value_unset, and don't use GValue

gnucash/gnome-utils/gnc-plugin.c

@@ -235,11 +235,8 @@ gnc_plugin_init_short_names (GtkActionGroup *action_group,
                              action_toolbar_labels *toolbar_labels)
 {
     GtkAction *action;
-    GValue value = { 0, };
     gint i;
 
-    g_value_init (&value, G_TYPE_STRING);
-
     for (i = 0; toolbar_labels[i].action_name; i++)
     {
         /* Add a couple of short labels for the toolbar */
@@ -306,6 +303,7 @@ gnc_plugin_update_actions (GtkActionGroup *action_group,
                       g_list_length(gtk_action_group_list_actions(action_group)));
         }
     }
+    g_value_unset (&gvalue);
 }