Do not check for writing to address zero on vax, since this is where we want to be able to load a .gz kernel.
Do not check for writing to address zero on vax, since this is where
we want to be able to load a .gz kernel.

ok deraadt@

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