check_parent_exists() can change errno. Ensure we preserve it across calls.
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue Apr 30 11:00:11 CEST 2013 on sn-devel-104
(cherry picked from commit
7e807934e6550308efed814a20ce6d6dabbad557)
Fix bug #9833 - Function called in unix_convert() path can overwrite errno.
Autobuild-User(v4-0-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-0-test): Tue May 7 10:32:43 CEST 2013 on sn-devel-104