[HttpFoundation] added missing trustProxy condition

src/Symfony/Component/HttpFoundation/Request.php

@@ -562,7 +562,11 @@ class Request
      */
     public function getPort()
     {
-        return $this->headers->get('X-Forwarded-Port') ?: $this->server->get('SERVER_PORT');
+        if (self::$trustProxy && $this->headers->has('X-Forwarded-Port')) {
+            return $this->headers->get('X-Forwarded-Port');
+        } else {
+            return $this->server->get('SERVER_PORT');
+        }
     }
 
     /**