Bug 4263: Fix subfield ordering broken by earlier patch

Restores alpha sorting of item subfields in add/edit screen

Signed-off-by: Nicole Engard <nengard@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>

cataloguing/additem.pl

@@ -612,6 +612,7 @@ foreach my $tag ( keys %{$tagslib}){
         } 
   }
 }
+@loop_data = sort {$a->{subfield} cmp $b->{subfield} } @loop_data;
 
 # what's the next op ? it's what we are not in : an add if we're editing, otherwise, and edit.
 $template->param( title => $record->title() ) if ($record ne "-1");