fix crash in battery gadget when deleting a gadget after module has been unloaded (possible if gadget is in edit mode)

SVN revision: 78523

src/modules/battery/e_mod_main.c

@@ -115,6 +115,7 @@ _gc_shutdown(E_Gadcon_Client *gcc)
 #endif
 
    inst = gcc->data;
+   if (battery_config)
      battery_config->instances =
        eina_list_remove(battery_config->instances, inst);
    evas_object_del(inst->o_battery);