Fix for bug 1538

Signed-off-by: Chris Cormack <crc@liblime.com>
Signed-off-by: Joshua Ferraro <jmf@liblime.com>

members/moremember.pl

@@ -186,7 +186,7 @@ my $totalprice = 0;
 my $toggle     = 0;
 for ( my $i = 0 ; $i < $count ; $i++ ) {
     my $datedue = $issue->[$i]{'date_due'};
-    $issue->[$i]{'date_due'} = C4::Dates->new($issue->[$i]{'date_due'})->output('iso');
+    $issue->[$i]{'date_due'} = C4::Dates->new($issue->[$i]{'date_due'},'iso')->output(C4::Context->preference('dateformat'));
     my %row = %{ $issue->[$i] };
     $totalprice += $issue->[$i]{'replacementprice'};
     $row{'replacementprice'} = $issue->[$i]{'replacementprice'};