Test for locked account in auth.c (bug #442).

[Darren Tucker]

Damien Miller wrote:
[snip]
> You are right, my fix introduced a new bug (though one could argue that
> it is PAM's responsibility to do this...).

Yeah, in fact some people might not want sshd to do this check at all
when using PAM.

> How does the following look:
[snip]

Ah I get it now, spw wasn't populated if USE_PAM is defined.
Proposed change looks OK to me.

-- 
Darren Tucker (dtucker at zip.com.au)
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