inherited privilege check when creating group errors if subject in group via multiple paths

groovy:000> try { addGroup("x:y:z", "test", "test"); } catch (Exception e) { e.printStackTrace(); }

java.lang.RuntimeException: Why is there more than one membership found? memberIds: .......<cut>....

,

Problem in HibernateSession: HibernateSession (6d01f2e5): new, notReadonly, READ_WRITE_NEW, notActiveTransaction, session (1cc42abe)

	at edu.internet2.middleware.grouper.MembershipFinder.findMembership(MembershipFinder.java:985)

	at edu.internet2.middleware.grouper.rules.RuleApi.inheritedRulesForFolder(RuleApi.java:593)

	at edu.internet2.middleware.grouper.rules.RuleApi.inheritedRulesForFolderOrCache(RuleApi.java:526)

	at edu.internet2.middleware.grouper.rules.RuleApi.access$100(RuleApi.java:57)

	at edu.internet2.middleware.grouper.rules.RuleApi$2.callback(RuleApi.java:760)

	at edu.internet2.middleware.grouper.GrouperSession.callbackGrouperSession(GrouperSession.java:976)

	at edu.internet2.middleware.grouper.rules.RuleApi.hasInheritedPrivilege(RuleApi.java:749)

	at edu.internet2.middleware.grouper.rules.RuleApi.hasInheritedPrivilege(RuleApi.java:734)

	at edu.internet2.middleware.grouper.Stem._grantDefaultPrivsUponCreate(Stem.java:2957)

	at edu.internet2.middleware.grouper.Stem.access$500(Stem.java:187)

	at edu.internet2.middleware.grouper.Stem$5.callback(Stem.java:2436)

	at edu.internet2.middleware.grouper.hibernate.HibernateSession.callbackHibernateSession(HibernateSession.java:703)

	at edu.internet2.middleware.grouper.Stem.internal_addChildGroup(Stem.java:2347)

	at edu.internet2.middleware.grouper.Stem.internal_addChildGroup(Stem.java:2319)

	at edu.internet2.middleware.grouper.Stem.internal_addChildGroup(Stem.java:2301)

	at edu.internet2.middleware.grouper.Stem.addChildGroup(Stem.java:551)

	at edu.internet2.middleware.grouper.app.gsh.addGroup.invoke(addGroup.java:90)

	at edu.internet2.middleware.grouper.app.gsh.addGroup$invoke.call(Unknown Source)