Don't loop forever on authentication failure. If the first attempt to
authorsimon <simon@cda61777-01e9-0310-a592-d414129be87e>
Wed, 23 Nov 2011 19:48:30 +0000 (19:48 +0000)
committersimon <simon@cda61777-01e9-0310-a592-d414129be87e>
Wed, 23 Nov 2011 19:48:30 +0000 (19:48 +0000)
fetch the article doesn't succeed, we should try authenticating; but
if the second attempt fails, then authentication didn't work, so we
should give up rather than try it pointlessly again.

git-svn-id: svn://svn.tartarus.org/sgt/utils@9340 cda61777-01e9-0310-a592-d414129be87e


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