From 55049b816f1c78769b3bfe734f033340d5872900 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sven=20Sch=C3=B6ling?= <s.schoeling@linet-services.de>
Date: Mon, 16 Jan 2012 18:36:30 +0100
Subject: [PATCH] =?utf8?q?SL::DB::Invoice:=20Eine=20Warning=20unterdr?=
 =?utf8?q?=C3=BCcken.?=
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---
 SL/DB/Invoice.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SL/DB/Invoice.pm b/SL/DB/Invoice.pm
index 91ee14c85..14c11fa7d 100644
--- a/SL/DB/Invoice.pm
+++ b/SL/DB/Invoice.pm
@@ -93,7 +93,7 @@ sub taxamount {
   my $self = shift;
   die 'not a setter method' if @_;
 
-  return $self->amount - $self->netamount;
+  return ($self->amount || 0) - ($self->netamount || 0);
 }
 
 __PACKAGE__->meta->make_attr_helpers(taxamount => 'numeric(15,5)');
-- 
2.20.1