From a2dcffcca2f425d84ca45a1e7f4a67cc785cb65d Mon Sep 17 00:00:00 2001
From: Jakob Borg <jakob@nym.se>
Date: Sun, 26 Jun 2016 10:17:12 +0000
Subject: [PATCH] lib/nat: Avoid concurrent reset of NAT timer (fixes #3337)

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3341
---
 lib/nat/service.go | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/nat/service.go b/lib/nat/service.go
index ad14e294..a04ea78b 100644
--- a/lib/nat/service.go
+++ b/lib/nat/service.go
@@ -44,9 +44,8 @@ func NewService(id protocol.DeviceID, cfg *config.Wrapper) *Service {
 func (s *Service) Serve() {
 	announce := stdsync.Once{}
 
-	s.timer.Reset(0)
-
 	s.mut.Lock()
+	s.timer.Reset(0)
 	s.stop = make(chan struct{})
 	s.mut.Unlock()