From 288772478cb4d96d340bc946745a859a0b01334a Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Thu, 18 Jul 2019 10:29:30 +0200
Subject: [PATCH] [Mailer] fixed logic

---
 src/Symfony/Component/Mailer/Transport/Dsn.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Mailer/Transport/Dsn.php b/src/Symfony/Component/Mailer/Transport/Dsn.php
index b5e2843ab4..58606bd900 100644
--- a/src/Symfony/Component/Mailer/Transport/Dsn.php
+++ b/src/Symfony/Component/Mailer/Transport/Dsn.php
@@ -49,8 +49,8 @@ final class Dsn
             throw new InvalidArgumentException(sprintf('The "%s" mailer DSN must contain a mailer name.', $dsn));
         }
 
-        $user = urldecode($parsedDsn['user'] ?? null);
-        $password = urldecode($parsedDsn['pass'] ?? null);
+        $user = isset($parsedDsn['user']) ? urldecode($parsedDsn['user']) : null;
+        $password = isset($parsedDsn['pass']) ? urldecode($parsedDsn['pass']) : null;
         $port = $parsedDsn['port'] ?? null;
         parse_str($parsedDsn['query'] ?? '', $query);