ldap: Work-arround with AD invalid return on searching objects

mylib/ldap.py

@@ -581,6 +581,9 @@ class LdapClient:
 
             objects = {}
             for obj_dn, obj_attrs in ldap_data.items():
+                # Ignore invalid result (view with an AD)
+                if not obj_dn or not isinstance(obj_attrs, dict):
+                    continue
                 objects[obj_dn] = self._get_obj(obj_dn, obj_attrs)
             self._cached_objects[name] = objects
         if not key_attr or key_attr == 'dn':