From b76a6193f8ff017307e5077a2a91e445733cf880 Mon Sep 17 00:00:00 2001
From: rudolfkoenig <rudolfkoenig@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Fri, 4 Jan 2013 06:57:32 +0000
Subject: [PATCH] Fix for crash on Windows if CUN is not reachable at start.
 Not tested

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@2427 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/00_CUL.pm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fhem/FHEM/00_CUL.pm b/fhem/FHEM/00_CUL.pm
index 77914a7f0..221845af3 100755
--- a/fhem/FHEM/00_CUL.pm
+++ b/fhem/FHEM/00_CUL.pm
@@ -949,8 +949,11 @@ CUL_Ready($)
 
   # This is relevant for windows/USB only
   my $po = $hash->{USBDev};
-  my ($BlockingFlags, $InBytes, $OutBytes, $ErrorFlags) = $po->status;
-  return ($InBytes>0);
+  my ($BlockingFlags, $InBytes, $OutBytes, $ErrorFlags);
+  if($po) {
+    ($BlockingFlags, $InBytes, $OutBytes, $ErrorFlags) = $po->status;
+  }
+  return ($InBytes && $InBytes>0);
 }
 
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