From 629dae0f8401e7dcbb8b16ba288340b2a9332ca4 Mon Sep 17 00:00:00 2001
From: cnderrauber <zengjiestc@gmail.com>
Date: Mon, 17 Jan 2022 12:04:01 +0800
Subject: [PATCH] fix close on nil sink (#344)

---
 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 05fe486be..605b0e199 100644
--- a/pkg/rtc/participant.go
+++ b/pkg/rtc/participant.go
@@ -464,7 +464,9 @@ func (p *ParticipantImpl) Close(sendLeave bool) error {
 
 	// ensure this is synchronized
 	p.lock.RLock()
-	p.params.Sink.Close()
+	if p.params.Sink != nil {
+		p.params.Sink.Close()
+	}
 	onClose := p.onClose
 	p.lock.RUnlock()
 	if onClose != nil {