From 2e436fb9a9d947de9aa0ca483524b0e3e51c5731 Mon Sep 17 00:00:00 2001
From: cpusoft <cpusoft@live.com>
Date: Thu, 22 Mar 2018 11:38:52 +0800
Subject: [PATCH] add ps.lock.Unlock() before return

---
 les/peer.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/les/peer.go b/les/peer.go
index caf568077805..eb7452e276c6 100644
--- a/les/peer.go
+++ b/les/peer.go
@@ -545,9 +545,11 @@ func (ps *peerSet) notify(n peerSetNotify) {
 func (ps *peerSet) Register(p *peer) error {
 	ps.lock.Lock()
 	if ps.closed {
+		ps.lock.Unlock()
 		return errClosed
 	}
 	if _, ok := ps.peers[p.id]; ok {
+		ps.lock.Unlock()
 		return errAlreadyRegistered
 	}
 	ps.peers[p.id] = p