import fix to ITS#4761

CHANGES

 OpenLDAP 2.3 Change Log
 
 OpenLDAP 2.3.31 Engineering
+	Fixed slapd "group" authz default member parsing (ITS#4761)
 	Documentation
 		Fixed typo in slapo-retcode(5) man page (ITS#4753)
 

servers/slapd/saslauthz.c

@@ -1136,6 +1136,7 @@ is_dn:		bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val);
 
 		} else {
 			BER_BVSTR( &group_oc, SLAPD_GROUP_CLASS );
+			BER_BVSTR( &member_at, SLAPD_GROUP_ATTR );
 		}
 		group_dn.bv_val++;
 		group_dn.bv_len = uri->bv_len - ( group_dn.bv_val - uri->bv_val );