From 3250f5c79906762177bc45dd9f9400fb910bbc6b Mon Sep 17 00:00:00 2001
From: Dietmar Maurer <dietmar@proxmox.com>
Date: Thu, 26 Jan 2012 06:56:56 +0100
Subject: [PATCH] allow to pass undefined value to template_replace

---
 data/PVE/Tools.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/data/PVE/Tools.pm b/data/PVE/Tools.pm
index dc4bbfd..85b3230 100644
--- a/data/PVE/Tools.pm
+++ b/data/PVE/Tools.pm
@@ -454,6 +454,8 @@ sub trim {
 sub template_replace {
     my ($tmpl, $data) = @_;
 
+    return $tmpl if !$tmpl;
+ 
     my $res = '';
     while ($tmpl =~ m/([^{]+)?({([^}]+)})?/g) {
 	$res .= $1 if $1;
-- 
2.39.2