From 4db953f40c2cb39fc16143682c5577d6f1674282 Mon Sep 17 00:00:00 2001
From: Thomas Calvet <calvet.thomas@gmail.com>
Date: Tue, 16 Jul 2019 14:34:18 +0200
Subject: [PATCH] [Config][ReflectionClassResource] Use ternary instead of null
 coaelscing operator

---
 .../Component/Config/Resource/ReflectionClassResource.php       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
index 0ece672216..f05042f8d3 100644
--- a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
+++ b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -140,7 +140,7 @@ class ReflectionClassResource implements SelfCheckingResourceInterface, \Seriali
 
             foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC | \ReflectionProperty::IS_PROTECTED) as $p) {
                 yield $p->getDocComment().$p;
-                yield print_r($defaults[$p->name] ?? null, true);
+                yield print_r(isset($defaults[$p->name]) ? $defaults[$p->name] : null, true);
             }
         }