ITS#4248 slapo-rwm free of static dn

CHANGES

 OpenLDAP 2.3 Change Log
+
+OpenLDAP 2.3.14 Engineering
 	Fixed slapd sc_prev update after free bug (ITS#4237)
 	Fixed slapd-meta sizelimit disclose issue (ITS#4213)
+	Fixed slapo-rwm static DN free bug (ITS#4248)
 	Fixed slapd assertion control restrictions
 
 OpenLDAP 2.3.13 Release

servers/slapd/overlays/rwmdn.c

@@ -202,6 +202,10 @@ rwm_dn_massage(
 		BER_BVZERO( &mdn );
 	}
 
+	if ( dn->bv_val == dmy ) {
+		BER_BVZERO( dn );
+	}
+
 	return rc;
 }