rem: LOG(L_ERR, "convert_result(): Invalid parameter\n");
add: LOG(L_ERR, "convert_result: Invalid parameter\n");
context: int convert_result(db_con_t* _h, db_res_t* _r){	if ((!_h) || (!_r)) {		LOG(L_ERR, "convert_result(): Invalid parameter\n");		return -1;	}	if (get_columns(_h, _r) < 0) {		LOG(L_ERR, "convert_result(): Error while getting column names\n");		return -2;	}	if (convert_rows(_h, _r) < 0) {		LOG(L_ERR, "convert_result(): Error while converting rows\n");		free_columns(_r);		return -3;	}	return 0;}