From d1480cd8dfe9edc5109d6825b9df67ef96af9079 Mon Sep 17 00:00:00 2001
From: AdoHe <coolhzb@163.com>
Date: Sat, 7 May 2016 10:06:13 -0400
Subject: [PATCH] fix rollout nil panice issue

---
 pkg/kubectl/history.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkg/kubectl/history.go b/pkg/kubectl/history.go
index 09b8e6b972..529da21faf 100644
--- a/pkg/kubectl/history.go
+++ b/pkg/kubectl/history.go
@@ -76,7 +76,10 @@ func (h *DeploymentHistoryViewer) History(namespace, name string) (HistoryInfo,
 	if err != nil {
 		return historyInfo, fmt.Errorf("failed to retrieve new replica set from deployment %s: %v", name, err)
 	}
-	allRSs := append(allOldRSs, newRS)
+	allRSs := allOldRSs
+	if newRS != nil {
+		allRSs = append(allRSs, newRS)
+	}
 	for _, rs := range allRSs {
 		v, err := deploymentutil.Revision(rs)
 		if err != nil {