If the argument is null. This function also should use EqualDistinguishedNames(). Change-Id: I4068aa94f9d9c422c96b394c82d3e28303774b0b Reviewed-on: https://gerrit.libreoffice.org/c/core/+/111667 Tested-by: Jenkins Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>