From 803f71a9fff859eef83e06cd6f6cc7503a6785df Mon Sep 17 00:00:00 2001
From: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Date: Tue, 5 Jan 2016 09:39:32 +0000
Subject: [PATCH] Bug 15466: Do not assume $values_in is a hashref

It could be undefined.
Test plan:
prove t/db_dependent/Suggestions.t
should return green.
---
 C4/Letters.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/C4/Letters.pm b/C4/Letters.pm
index e5c15ba..dc9574f 100644
--- a/C4/Letters.pm
+++ b/C4/Letters.pm
@@ -803,7 +803,7 @@ sub _parseletter {
 
     # Work on a local copy of $values_in (passed by reference) to avoid side effects
     # in callers ( by changing / formatting values )
-    my $values = { %$values_in };
+    my $values = $values_in ? { %$values_in } : {};
 
     if ( $table eq 'borrowers' && $values->{'dateexpiry'} ){
         $values->{'dateexpiry'} = format_sqldatetime( $values->{'dateexpiry'} );
-- 
2.1.0