Update 9.16.23
    
    Reloading a catalog zone which referenced a missing/deleted member zone
    triggered a runtime check failure, causing named to exit prematurely.
    This has been fixed. [GL #2308]
    
    https://downloads.isc.org/isc/bind9/9.16.23/doc/arm/html/notes.html#notes-for-bind-9-16-23