From d19b96830f5d188c0dc574dd1ad7dcb67f3c8603 Mon Sep 17 00:00:00 2001
From: piro <piro@599a83e7-65a4-db11-8015-0010dcdd6dc2>
Date: Thu, 17 Dec 2009 08:47:02 +0000
Subject: [PATCH] =?UTF-8?q?=E3=83=84=E3=83=BC=E3=83=AB=E3=83=81=E3=83=83?=
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 =?UTF-8?q?=E3=81=9F?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

git-svn-id: http://www.cozmixng.org/repos/piro/treestyletab/trunk@5530 599a83e7-65a4-db11-8015-0010dcdd6dc2
---
 content/treestyletab/treestyletabbrowser.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/content/treestyletab/treestyletabbrowser.js b/content/treestyletab/treestyletabbrowser.js
index a95f8c71..16fe3bb1 100644
--- a/content/treestyletab/treestyletabbrowser.js
+++ b/content/treestyletab/treestyletabbrowser.js
@@ -444,7 +444,8 @@ TreeStyleTabBrowser.prototype = {
 			b.createTooltip.toSource().replace(
 				'if ("mOverCloseButton" in tn && tn.mOverCloseButton) {',
 				<![CDATA[
-					if (TreeStyleTabService.getTabBrowserFromChild(tn).treeStyleTab.handleTooltip(event, tn)) {
+					if (TreeStyleTabService.getTabBrowserFromChild(tn) &&
+						TreeStyleTabService.getTabBrowserFromChild(tn).treeStyleTab.handleTooltip(event, tn)) {
 						return true;
 					}
 					else $&]]>