From 3d0747957ea8ad1d416aca4c175b0f523d1c5a08 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 31 Jul 2015 07:41:57 -0400
Subject: [PATCH] Fix some javascript errors in rare situations (#1490441)

---
 program/js/app.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index b5d6ccd..f0e9149 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -8128,7 +8128,7 @@
   // get the IMP mailbox of the message with the given UID
   this.get_message_mailbox = function(uid)
   {
-    var msg = this.env.messages ? this.env.messages[uid] : {};
+    var msg = (this.env.messages && uid ? this.env.messages[uid] : null) || {};
     return msg.mbox || this.env.mailbox;
   };
 

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