rem: RES_ROWS(r) = NULL;
add: RES_ROWS(r) = 0;
context: db_res_t* new_result(void){	db_res_t* r;	r = (db_res_t*)pkg_malloc(sizeof(db_res_t));	if (!r) {		LOG(L_ERR, "new_result(): No memory left\n");		return NULL;	}	RES_NAMES(r) = NULL;	RES_TYPES(r) = NULL;	RES_COL_N(r) = 0;	RES_ROWS(r) = NULL;	RES_ROW_N(r) = 0;	return r;}