static pj_status_t mod_ua_unload(void)
{
    pj_thread_local_free(pjsip_dlg_lock_tls_id);
    pj_mutex_destroy(mod_ua.mutex);

    /* Release pool */
    if (mod_ua.pool) {
	pjsip_endpt_release_pool( mod_ua.endpt, mod_ua.pool );
    }
    return PJ_SUCCESS;
}
static pj_status_t mod_ua_unload(void)
{
    pj_thread_local_free(pjsip_dlg_lock_tls_id);
    pj_mutex_destroy(mod_ua.mutex);

     
    if (mod_ua.pool) {
	pjsip_endpt_release_pool( mod_ua.endpt, mod_ua.pool );
    }
    return PJ_SUCCESS;
}