From abc09ddbb12d4332a08b115e1b69baec9a1b030a Mon Sep 17 00:00:00 2001
From: vogelor <vogelor@ispconfig3>
Date: Thu, 18 Dec 2008 07:08:38 -0500
Subject: [PATCH] improvement of the RAID-State

---
 install/lib/install.lib.php |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/install/lib/install.lib.php b/install/lib/install.lib.php
index 473dc9f..b624be4 100644
--- a/install/lib/install.lib.php
+++ b/install/lib/install.lib.php
@@ -556,7 +556,7 @@
 
 function is_installed($appname) {
 	exec('which '.escapeshellcmd($appname),$out);
-	if(stristr($out[0],$appname)) {
+	if(isset($out[0]) && stristr($out[0],$appname)) {
 		return true;
 	} else {
 		return false;

--
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