e2ea4be nested groups: fix group lookup hangs if member dn is incorrect

1 file Authored by pbrezina 6 years ago , Committed by jhrozek 6 years ago ,
    nested groups: fix group lookup hangs if member dn is incorrect
    
    https://fedorahosted.org/sssd/ticket/1783
    
    When dn in member attribute is invalid (e.g. rdn instead of dn)
    or it is outside of configured search bases, we might hit a situation
    when tevent_req is marked as done before any callback could be
    attached on it.