[Bug 239893] soclose use after free

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239893

            Bug ID: 239893
           Summary: soclose use after free
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: chrismiller.bsd at gmail.com

In soclose() the second loop through lqueue should use TAILQ_FOREACH_SAFE since
the socket is freed within the loop by soabort(), so the so_list pointer in
that socket could be garbage.

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