From 64586b3c7345a0fbae4e1400dd5fefa936e92155 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Lafont?= <flafdivers@free.fr>
Date: Sun, 28 Sep 2014 15:28:52 +0200
Subject: if fork() fails, it returns undef

if fork() fails, it returns undef not a negative number
---
 apt-mirror | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apt-mirror b/apt-mirror
index 20d3559..e6b4b0b 100755
--- a/apt-mirror
+++ b/apt-mirror
@@ -249,7 +249,7 @@ sub download_urls
 
         $pid = fork();
 
-        die("apt-mirror: can't do fork in download_urls") if $pid < 0;
+        die("apt-mirror: can't do fork in download_urls") if !defined($pid);
 
         if ( $pid == 0 )
         {
-- 
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