fix cluster proxy cleanup routing

server/topic_proxy.go

@@ -7,6 +7,7 @@
 package main
 
 import (
+	"errors"
 	"net/http"
 	"time"
 
@@ -101,7 +102,7 @@ func (t *Topic) runProxy(hub *Hub) {
 				s.detachSession(t.name)
 			}
 
-			if err := globals.cluster.topicProxyGone(t.tenantID, t.name); err != nil {
+			if err := globals.cluster.topicProxyGone(t.tenantID, t.name); err != nil && !errors.Is(err, errClusterTopicOwnerUnavailable) {
 				logs.Warn.Printf("proxy topic[%s] shutdown: failed to notify master - %s", t.name, err)
 			}
 
@@ -164,7 +165,7 @@ func (t *Topic) handleProxyLeaveRequest(msg *ClientComMessage, killTimer *time.T
 		}
 	}
 
-	if err := globals.cluster.routeToTopicMaster(ProxyReqLeave, msg, t.name, msg.sess); err != nil {
+	if err := globals.cluster.routeToTopicMaster(ProxyReqLeave, msg, t.name, msg.sess); err != nil && !errors.Is(err, errClusterTopicOwnerUnavailable) {
 		logs.Warn.Printf("proxy topic[%s]: route leave request from proxy to master failed - %s", t.name, err)
 	}
 	if len(t.sessions) == 0 {