Bug 26636: (QA follow-up) Handle no results correctly

Sponsored-by: Virginia Polytechnic Institute and State University

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

Koha/REST/Plugin/Objects.pm

@@ -64,6 +64,8 @@ the requested object. It passes through any embeds if specified.
 
             my $object = $result_set->find( $id, $attributes );
 
+            return unless $object;
+
             return $object->to_api({ embed => $embed });
         }
     );