Review the proposed patch then download it to apply it manually or execute the following command from the repository root directory:
curl https://fabbot.io/patch/symfony/symfony/20516/5b7fe852aa1ce7e8fb01c8ed567af05b288b5d43/cs.diff | patch -p0
diff -ru src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
--- src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php 2017-04-19 22:18:14.687796630 +0000
+++ src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php 2017-04-19 22:18:20.623608681 +0000
@@ -141,7 +141,7 @@
*
* @return array The logout listener found
*
- * @throws \InvalidArgumentException if no LogoutListener is registered for the key or could not be found automatically.
+ * @throws \InvalidArgumentException if no LogoutListener is registered for the key or could not be found automatically
*/
private function getListener($key)
{