From b1b886d27d380fb3641c3041eba35abf2dadceac Mon Sep 17 00:00:00 2001
From: Piro / YUKI Hiroshi <piro.outsider.reflex@gmail.com>
Date: Tue, 29 Sep 2015 03:47:29 +0900
Subject: [PATCH] Suppress error on window closing

---
 content/treestyletab/content-utils-autohide.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/treestyletab/content-utils-autohide.js b/content/treestyletab/content-utils-autohide.js
index f5e20e2c..af4ed485 100644
--- a/content/treestyletab/content-utils-autohide.js
+++ b/content/treestyletab/content-utils-autohide.js
@@ -38,7 +38,7 @@
 	}
 
 	var messageListener = function(aMessage) {
-		mydump('CONTENT MESSAGE LISTENED <'+global.content.location+'>');
+		mydump('CONTENT MESSAGE LISTENED <'+(global.content && global.content.location)+'>');
 		mydump(JSON.stringify(aMessage.json));
 		switch (aMessage.json.command)
 		{