From e4a7141f00c6ab19ec2db71d8ca4f0efac606ff8 Mon Sep 17 00:00:00 2001
From: Ingo Schommer <ingo@silverstripe.com>
Date: Tue, 4 Dec 2007 04:09:07 +0000
Subject: [PATCH] additional requirements isset() check

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@46309 467b73ca-7a2a-4603-9d3b-597d59a354a9
---
 core/Requirements.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/Requirements.php b/core/Requirements.php
index bee2d7679..ea055cd04 100644
--- a/core/Requirements.php
+++ b/core/Requirements.php
@@ -114,7 +114,7 @@ class Requirements {
 	static function clear($fileOrID = null) {
 		if($fileOrID) {
 			foreach(array('javascript','css', 'customScript', 'customCSS') as $type) {
-				if(Requirements::${$type}[$fileOrID]) {
+				if(isset(Requirements::${$type}[$fileOrID])) {
 					Requirements::$disabled[$type][$fileOrID] = Requirements::${$type}[$fileOrID];
 					unset(Requirements::${$type}[$fileOrID]);
 				}