From 3dfa29b36de4c7cfb1b652b7450be04dc403591d Mon Sep 17 00:00:00 2001
From: Zhicheng Wang <zcwang@thoughtworks.com>
Date: Fri, 3 Mar 2017 16:33:49 +0800
Subject: [PATCH] fix: null pointer bug in cheat-sheet

---
 public/translate/cn/translate.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/public/translate/cn/translate.js b/public/translate/cn/translate.js
index 79cc201e85..15b887472d 100644
--- a/public/translate/cn/translate.js
+++ b/public/translate/cn/translate.js
@@ -18,6 +18,10 @@ var sourceVisible = localStorage.getItem('source-visible') === 'true';
    * @param container
    */
   function processContainer(container) {
+    if (!container) {
+      return;
+    }
+
     var nodes = container.querySelectorAll('p,h1,h2,h3,h4,h5,h6,header,a');
     for(var i in nodes) {
       (function(node) {