From 3652c7066c5521aa1381f1982cbf3dacb0fb29aa Mon Sep 17 00:00:00 2001
From: Benjamin Gilbert <bgilbert@backtick.net>
Date: Mon, 29 Apr 2013 13:17:37 -0400
Subject: [PATCH] Re-add viewer.source check in updateMulti()

It should be redundant in normal operation, but may prevent a timer leak
in case of a bug in the open/close path.
---
 src/viewer.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/viewer.js b/src/viewer.js
index af4b1822..a47d46d0 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -1343,6 +1343,11 @@ function updateMulti( viewer ) {
 
     var beginTime;
 
+    if ( !viewer.source ) {
+        THIS[ viewer.hash ].updateRequestId = null;
+        return;
+    }
+
     beginTime = +new Date();
     updateOnce( viewer );