allow buflen > MLEN for !SO_NAME case (like ancillary data, necessary for IPv6 advanced API). sync with netbsd.
allow buflen > MLEN for !SO_NAME case (like ancillary data, necessary for
IPv6 advanced API).
sync with netbsd.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars