Bug 16114: Koha::ItemType->translated_description should return a string

This patch fixes a regression introduce by bug 14828.
If an itemtype is translated, its description won't be displayed
correctly on the item search form.

Koha::ItemType->translated_description is only used once.

Test plan:
- define a translation for an item type (Administration ->
  Item types -> Edit -> Translate into other languages)
- go on the item search form, the item type should be displayed
  correctly.

QA note: This module is not covered by tests, it seems that I forgot to
write them...

Signed-off-by: Owen Leonard <oleonard@myacpl.org>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com

Koha/ItemType.pm

@@ -57,7 +57,9 @@ sub translated_description {
         entity => 'itemtypes',
         lang => $lang
     })->next;
-    return $translated_description || $self->description;
+    return $translated_description
+         ? $translated_description->translation
+         : $self->description;
 }
 
 =head3 translated_descriptions