plug a memleak, free the devname when we succeed with the ioctl. also remove an uneeded if (devname) check.
plug a memleak, free the devname when we succeed with
the ioctl. also remove an uneeded if (devname) check.

ok jsing@

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