Merge branch '2.3'

* 2.3:
  [DoctrineBridge] Added type check to prevent calling clear() on arrays
  [Intl] Improved FormTypeCsrfExtension to use the type class as default intention if the form name is empty
  Fix docblock typo

src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Bridge\Doctrine\Form\EventListener;
 
+use Doctrine\Common\Collections\Collection;
 use Symfony\Component\Form\FormEvents;
 use Symfony\Component\Form\FormEvent;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
@@ -40,7 +41,7 @@ class MergeDoctrineCollectionListener implements EventSubscriberInterface
 
         // If all items were removed, call clear which has a higher
         // performance on persistent collections
-        if ($collection && count($data) === 0) {
+        if ($collection instanceof Collection && count($data) === 0) {
             $collection->clear();
         }
     }

src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php

@@ -291,7 +291,7 @@ abstract class AbstractRememberMeServices implements RememberMeServicesInterface
     }
 
     /**
-     * Checks whether remember-me capabilities where requested
+     * Checks whether remember-me capabilities were requested
      *
      * @param Request $request
      *