From 13426dbccd6973339f6a9836a118f92734b8a15b Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Tue, 11 Aug 2020 16:06:48 +0100
Subject: [PATCH] Fix mutex

---
 currentstateserver/acls/acls.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/currentstateserver/acls/acls.go b/currentstateserver/acls/acls.go
index cb6f0074d..82776d359 100644
--- a/currentstateserver/acls/acls.go
+++ b/currentstateserver/acls/acls.go
@@ -77,7 +77,7 @@ func (s *ServerACLs) OnServerACLUpdate(state *gomatrixserverlib.Event) {
 	}
 	logrus.Infof("Update server ACLs for %q", state.RoomID())
 	s.aclsMutex.Lock()
-	defer s.aclsMutex.RUnlock()
+	defer s.aclsMutex.Unlock()
 	s.acls[state.RoomID()] = acls
 }