From a011d995da758fd6016932a9a3c9bbacfa62bee4 Mon Sep 17 00:00:00 2001
From: Raja Subramanian <raja.gobi@tutanota.com>
Date: Thu, 18 Jun 2026 23:24:33 +0530
Subject: [PATCH] Do not call nil callback (#4607)

---
 pkg/rtc/participant.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkg/rtc/participant.go b/pkg/rtc/participant.go
index 1034c2275..e65733d28 100644
--- a/pkg/rtc/participant.go
+++ b/pkg/rtc/participant.go
@@ -966,7 +966,9 @@ func (p *ParticipantImpl) GetTelemetryListener() types.ParticipantTelemetryListe
 
 func (p *ParticipantImpl) AddOnClose(key string, callback func(types.LocalParticipant)) {
 	if p.isClosed.Load() {
-		go callback(p)
+		if callback != nil {
+			go callback(p)
+		}
 		return
 	}