From dcf501751ab79e9bafb85244643e7af1121c806e Mon Sep 17 00:00:00 2001
From: delthas <delthas@dille.cc>
Date: Fri, 16 Dec 2022 11:47:57 +0100
Subject: Prevent possible deadlock in the typing system

When being flooded by typing notifications, we could steal the lock from
the routine supposed to empty the notification channel.

This caused a possible deadlock in rare cases.
---
 irc/typing.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/irc/typing.go b/irc/typing.go
index 4a8cf55..128f83d 100644
--- a/irc/typing.go
+++ b/irc/typing.go
@@ -72,9 +72,10 @@ func (ts *Typings) Active(target, name string) {
 		time.Sleep(6 * time.Second)
 
 		ts.l.Lock()
-		defer ts.l.Unlock()
+		closed := ts.closed
+		ts.l.Unlock()
 
-		if !ts.closed {
+		if !closed {
 			ts.timeouts <- t
 		}
 	}()
-- 
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