old_handler = XSetErrorHandler (ignore_errors);
result = XGetWindowProperty (client->display, client->manager_window, server.atom._XSETTINGS_SETTINGS, 0, LONG_MAX, False, server.atom._XSETTINGS_SETTINGS, &type, &format, &n_items, &bytes_after, &data);
old_handler = XSetErrorHandler (ignore_errors);
result = XGetWindowProperty (client->display, client->manager_window, server.atom._XSETTINGS_SETTINGS, 0, LONG_MAX, False, server.atom._XSETTINGS_SETTINGS, &type, &format, &n_items, &bytes_after, &data);