auth: fix skipping of ~/ if $HOME subst fails
auth: fix skipping of ~/ if $HOME subst fails

We were breaking out of the loop entirely, and failing to check the rest
of the items in the path list.  Doh!

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph