static void release_stun_session(pjsua_stun_resolve *sess)
{
    PJSUA_LOCK();
    pj_list_erase(sess);
    PJSUA_UNLOCK();

    pj_assert(sess->stun_sock==NULL);
    pj_pool_release(sess->pool);
}
static void release_stun_session(pjsua_stun_resolve *sess)
{
    PJSUA_LOCK();
    pj_list_erase(sess);
    PJSUA_UNLOCK();

    pj_assert(sess->stun_sock==NULL);
    pj_pool_release(sess->pool);
}