From 905c5d6b820eee4643b9c33322be9d395319bd9d Mon Sep 17 00:00:00 2001
From: Wang Yiping <wangyiping@4paradigm.com>
Date: Tue, 17 Dec 2019 00:32:24 +0800
Subject: [PATCH] fix deleteLease

---
 subnet/watch.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/subnet/watch.go b/subnet/watch.go
index 709f23cfb4..46f52e51f5 100644
--- a/subnet/watch.go
+++ b/subnet/watch.go
@@ -150,8 +150,8 @@ func (lw *leaseWatcher) remove(lease *Lease) Event {
 }
 
 func deleteLease(l []Lease, i int) []Lease {
-	l[i] = l[len(l)-1]
-	return l[:len(l)-1]
+	l = append(l[:i], l[i+1:]...)
+	return l
 }
 
 // WatchLease performs a long term watch of the given network's subnet lease