[Security] Fix CS + unreachable code

src/Symfony/Component/Security/Core/Exception/AccountStatusException.php

@@ -60,10 +60,8 @@ abstract class AccountStatusException extends AuthenticationException
      */
     public function unserialize($str)
     {
-        list(
+        list($this->user, $parentData) = unserialize($str);
-            $this->user,
+
-            $parentData
-        ) = unserialize($str);
         parent::unserialize($parentData);
     }
 }

src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php

@@ -65,10 +65,8 @@ class UsernameNotFoundException extends AuthenticationException
      */
     public function unserialize($str)
     {
-        list(
+        list($this->username, $parentData) = unserialize($str);
-            $this->username,
+
-            $parentData
-        ) = unserialize($str);
         parent::unserialize($parentData);
     }
 }

src/Symfony/Component/Security/Core/User/UserChecker.php

@@ -55,7 +55,7 @@ class UserChecker implements UserCheckerInterface
         }
 
         if (!$user->isEnabled()) {
-            throw new DisabledException('User account is disabled.');
+            $ex = new DisabledException('User account is disabled.');
             $ex->setUser($user);
             throw $ex;
         }