use 'mss' as lower limit, since 'ifp' might not be set; ok dhartmei@, henning@ report and test by mpf@
use 'mss' as lower limit, since 'ifp' might not be set; ok dhartmei@, henning@
report and test by mpf@

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