[issue1646] fix kernel build in non-INET6 case

["Sascha Wildner \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

Sascha Wildner <saw@online.de> added the comment:

OK, I've committed it (along with some more minor fixes which crept up during
LINT build).

2183cbe4203baa9866bde803a95210404d75b6ac

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status: unread -> resolved

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DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue1646>
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