Fix buglet in wc-auth-provider.
Fix buglet in wc-auth-provider.

* providers.c (get_creds): don't exit early, just because there's no
  base_dir.  You may have received default creds.  :-)

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion