les: add ps.lock.Unlock() before return (ethereum#16360)

cpusoft · mariameda · commit bb958d1cf921 · 2018-08-19T19:54:05.000+04:30
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -545,9 +545,11 @@ func (ps *peerSet) notify(n peerSetNotify) {`
`545`	`545`	`func (ps peerSet) Register(p peer) error {`
`546`	`546`	`ps.lock.Lock()`
`547`	`547`	`if ps.closed {`
	`548`	`+ ps.lock.Unlock()`
`548`	`549`	`return errClosed`
`549`	`550`	`}`
`550`	`551`	`if _, ok := ps.peers[p.id]; ok {`
	`552`	`+ ps.lock.Unlock()`
`551`	`553`	`return errAlreadyRegistered`
`552`	`554`	`}`
`553`	`555`	`ps.peers[p.id] = p`