From b6cca6ffb2c4eb9861105dcf10c9a721efd044ce Mon Sep 17 00:00:00 2001
From: pinturic <luca.tagliaferri@gmail.com>
Date: Thu, 5 Nov 2015 11:14:27 +0100
Subject: [PATCH] Update left-nav.jsx

Menu can be null if the MenuItems are inlined
---
 src/left-nav.jsx | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/left-nav.jsx b/src/left-nav.jsx
index e01b11c12f19da..72761f4c0faac5 100644
--- a/src/left-nav.jsx
+++ b/src/left-nav.jsx
@@ -225,8 +225,10 @@ const LeftNav = React.createClass({
     if (this.props.header) {
       let container = ReactDOM.findDOMNode(this.refs.clickAwayableElement);
       let menu = ReactDOM.findDOMNode(this.refs.menuItems);
-      let menuHeight = container.clientHeight - menu.offsetTop;
-      menu.style.height = menuHeight + 'px';
+      if (menu){
+        let menuHeight = container.clientHeight - menu.offsetTop;
+        menu.style.height = menuHeight + 'px';
+      }
     }
   },