- Move some of the braces under their respective conditionals to make the statements more self-encapsulated and only define the aliasreq union in the event either INET or INET6 is defined.
- Fix a copy-paste error: in_gre_ioctl should be in6_gre_ioctl in the INET6 case.
This change makes the code compile in the LINT-NOINET case (when INET6
is enabled, but INET is not).
Reported by: tinderbox
Fixes: e1e18cc12e68 ("if_gre: Add netlink support with tests")