rem: LOG(L_ERR, "create_presentity(): Error while creating presentity\n");
add: LOG(L_ERR, "create_presentity_only(): Error while creating presentity\n");
context: int create_presentity_only(struct sip_msg* _m, struct pdomain* _d, str* _puri, 			   struct presentity** _p){	time_t e;	if (_m->expires) {		e = ((exp_body_t*)_m->expires->parsed)->val;	} else {		e = default_expires;	}		if (e == 0) {		*_p = 0;		DBG("create_presentity(): expires = 0\n");		return 0;	}	     /* Convert to absolute time */	e += act_time;	if (new_presentity(_puri, _p) < 0) {		LOG(L_ERR, "create_presentity(): Error while creating presentity\n");		return -2;	}	add_presentity(_d, *_p);	return 0;}