https://bugs.openldap.org/show_bug.cgi?id=9121

--- Comment #7 from Quanah Gibson-Mount quanah@openldap.org --- Commits: • 12e11c9b by Howard Chu at 2020-08-18T23:49:26+00:00 ITS#9121 slapo-dynlist, -memberof: define memberOf if needed

Ignore if it's defined already. Make it no-user-mod.