From a68cc20dd4f05e19d0790474bbf425027fd4a42f Mon Sep 17 00:00:00 2001
From: Wesley Cho <wesley.cho@gmail.com>
Date: Mon, 13 Jun 2016 12:54:15 -0700
Subject: [PATCH] chore(dropdown): add guard when closing

---
 src/dropdown/dropdown.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/dropdown/dropdown.js b/src/dropdown/dropdown.js
index ba238b5f7c..97ce5f10d6 100644
--- a/src/dropdown/dropdown.js
+++ b/src/dropdown/dropdown.js
@@ -24,7 +24,10 @@ angular.module('ui.bootstrap.dropdown', ['ui.bootstrap.position'])
     if (openScope === dropdownScope) {
       openScope = null;
       $document.off('click', closeDropdown);
-      dropdownScope.getDropdownElement().off('keydown', this.keybindFilter);
+      var dropdownMenu = dropdownScope.getDropdownElement();
+      if (dropdownMenu) {
+        dropdownMenu.off('keydown', this.keybindFilter);
+      }
     }
   };