From 0b21c4c68296dcb81a44b58b91df477e6905543b Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Thu, 5 Feb 2015 19:01:55 -0500
Subject: [PATCH] Still show proper line number when no message is thrown

---
 resource/bluebird.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/resource/bluebird.js b/resource/bluebird.js
index b4b8bc777..5e5625ff6 100644
--- a/resource/bluebird.js
+++ b/resource/bluebird.js
@@ -4676,7 +4676,7 @@ function originatesFromRejection(e) {
 
 function canAttachTrace(obj) {
     // Added by Zotero
-    return obj.message && obj.stack && es5.propertyIsWritable(obj, "stack");
+    return obj && obj.stack && es5.propertyIsWritable(obj, "stack");
     
     return obj instanceof Error && es5.propertyIsWritable(obj, "stack");
 }