From 994c6caa7969fbdb32449b54a50a2271badf2604 Mon Sep 17 00:00:00 2001
From: Brian Jacobel <bjacobel@gmail.com>
Date: Tue, 9 Aug 2016 10:54:38 -0400
Subject: [PATCH] Bring a bugfix from discussions feature branch over

---
 .../common/js/discussion/views/discussion_thread_view.js     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/static/common/js/discussion/views/discussion_thread_view.js b/common/static/common/js/discussion/views/discussion_thread_view.js
index 8a859e77cb..b803df29f5 100644
--- a/common/static/common/js/discussion/views/discussion_thread_view.js
+++ b/common/static/common/js/discussion/views/discussion_thread_view.js
@@ -213,7 +213,10 @@
             };
 
             DiscussionThreadView.prototype.cleanup = function() {
-                if (this.responsesRequest) {
+                // jQuery.ajax after 1.5 returns a jqXHR which doesn't implement .abort
+                // but I don't feel confident enough about what's going on here to remove this code
+                // so just check to make sure we can abort before we try to
+                if (this.responsesRequest && this.responsesRequest.abort) {
                     return this.responsesRequest.abort();
                 }
             };