Description of problem:

authd always returns an error if locale file is missing

Version-Release number of selected component (if applicable):

authd-1.4.3-8.1

How reproducible:

Always

Steps to Reproduce:
1. make sure there is a socket open on localhost
2. use netstat -t to find port numbers
3. LANG=en_AU in.authd <lport>,<rport>
  
Actual results:
<lport> , <rport> : ERROR :NO-USER

Expected results:

<lport> , <rport> : USERID : UNIX :<user>

Additional info:

This happens provided that LANG is set to a locale which doesn't have an
auth.mo file. What happens is the errno gets set to ENOENT and is never cleared.
Later code assumes that this is an error, even if a matching socket is found.

Probably errno should be cleared after setlocale is called. See attached patch,
which is only a partial solution as setlocale can also be called to handle a
command line language setting.