Merge branch '3.4' into 4.4

* 3.4:
  [Security] Fix exception name in doc comments

Author: nicolas-grekas

Core/Exception/AuthenticationExpiredException.php

@@ -12,7 +12,7 @@
 namespace Symfony\Component\Security\Core\Exception;
 
 /**
- * AuthenticationServiceException is thrown when an authenticated token becomes un-authenticated between requests.
+ * AuthenticationExpiredException is thrown when an authenticated token becomes un-authenticated between requests.
  *
  * In practice, this is due to the User changing between requests (e.g. password changes),
  * causes the token to become un-authenticated.

Guard/Provider/GuardAuthenticationProvider.php

@@ -86,7 +86,7 @@ public function authenticate(TokenInterface $token)
                 return $token;
             }
 
-            // this AccountStatusException causes the user to be logged out
+            // this AccountExpiredException causes the user to be logged out
             throw new AuthenticationExpiredException();
         }