Title: #246: filter_users and filter_groups stop working properly in v 1.15
But there's no memory involved at all on sss_get_name_from_msg().
I'll follow you suggestion and update the PR anyways.
Yes, that means if `SYSDB_NAME` attribute exists, it is returned. What if the
attribute does not exist? It should, but we should handle case were an error happened.
See the full comment at https://github.com/SSSD/sssd/pull/246#issuecomment-297663449