Ticket 49412 - SIGSEV when setting invalid changelog config value
    
    Bug Description:
    	If admin configures attribute of "cn=changelog5,cn=config" with
    	empty value, it can trigger a sigsev
    
    Fix Description:
    	Testing empty value
    
    https://pagure.io/389-ds-base/issue/49412
    
    Reviewed by: Ludwig Krispenz, Mark Reynolds (thanks to you)
    
    Platforms tested: F23
    
    Flag Day: no
    
    Doc impact: no