From fa2830eb2251d386109b6d7b9990e658ee8cccb7 Mon Sep 17 00:00:00 2001
From: aler9 <46489434+aler9@users.noreply.github.com>
Date: Tue, 11 May 2021 11:45:11 +0200
Subject: [PATCH] server: fix race condition

---
 server.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/server.go b/server.go
index 304dd29e..c25096b4 100644
--- a/server.go
+++ b/server.go
@@ -327,6 +327,9 @@ outer:
 			}
 
 		case ss := <-s.sessionClose:
+			if sss, ok := s.sessions[ss.id]; !ok || sss != ss {
+				continue
+			}
 			s.doSessionClose(ss)
 
 		case <-s.ctx.Done():