Merge pull request #2100 from biblibre/fix-user-batch-update-form

Fix TypeError when building user batch update form

application/src/Service/Form/UserBatchUpdateFormFactory.php

@@ -9,7 +9,7 @@ class UserBatchUpdateFormFactory implements FactoryInterface
 {
     public function __invoke(ContainerInterface $services, $requestedName, array $options = null)
     {
-        $form = new UserBatchUpdateForm(null, $options);
+        $form = new UserBatchUpdateForm(null, $options ?? []);
         $form->setEventManager($services->get('EventManager'));
         return $form;
     }