a47cb2e nested groups: do not fail if we get one entry twice

1 file Authored by pbrezina 6 years ago , Committed by jhrozek 6 years ago ,
    nested groups: do not fail if we get one entry twice
    
    https://fedorahosted.org/sssd/ticket/2341
    
    Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>