From 2b28702a1892e69061d792f9ea2c191b242e416b Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@qossmic.com>
Date: Fri, 27 May 2022 13:23:22 +0200
Subject: [PATCH] ensure that the $response property is initialized before
 being read

---
 src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php b/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php
index b06f3244e73b8..d60b02a287558 100644
--- a/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php
@@ -25,7 +25,7 @@
 class FirePHPHandler extends BaseFirePHPHandler
 {
     private array $headers = [];
-    private Response $response;
+    private ?Response $response = null;
 
     /**
      * Adds the headers to the response once it's created.
@@ -61,7 +61,7 @@ protected function sendHeader($header, $content): void
             return;
         }
 
-        if ($this->response) {
+        if (null !== $this->response) {
             $this->response->headers->set($header, $content);
         } else {
             $this->headers[$header] = $content;