corrected ITS#4991 fix

CHANGES

@@ -2,6 +2,7 @@ OpenLDAP 2.3 Change Log
 
 OpenLDAP 2.3.39 Engineering
 	Fixed slapd-sql concurrency issue (ITS#5095)
+        Fixed slapo-pcache and -rwm interaction fix (ITS#4991) 
 	Fixed liblber Windows x64 portability (ITS#5105)
 	Fixed libldap ppolicy control creation (ITS#5103)
 	Documentation

servers/slapd/overlays/pcache.c

@@ -1050,7 +1050,6 @@ pcache_response(
 	if ( si->query.save_attrs != NULL ) {
 		rs->sr_attrs = si->query.save_attrs;
 		op->ors_attrs = si->query.save_attrs;
-		si->query.save_attrs = NULL;
 	}
 
 	if ( rs->sr_type == REP_SEARCH ) {