Ticket #48939 - nsslapd-workingdir is empty when ns-slapd is started by systemd
    
    Description: Thanks to tbordaz@redhat.com for suggesting to reset the
    working dir in the error cases.  I've added more error checks and
    resetting the nsslapd-workingdir values.
    
    https://fedorahosted.org/389/ticket/48939
    
    Reviewed by mreynolds@redhat.com (Thank you, Mark!!)
    
    (cherry picked from commit 70d06dab96468e0c6712482186f22de8e2c33e17)