ERR_RETURN
#define ERR_RETURN(strm,err) return (strm->msg=z_errmsg[1-err], err)
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN (-1) /* result code on error */
#define ERR_RETURN(strm, err) \