[HttpFoundation] fix typo

src/Symfony/Component/HttpFoundation/HeaderUtils.php

@@ -36,7 +36,6 @@ class HeaderUtils
      *     HeaderUtils::split("da, en-gb;q=0.8", ",;")
      *     // => ['da'], ['en-gb', 'q=0.8']]
      *
-     * @param string $header     HTTP header value
      * @param string $separators List of characters to split on, ordered by
      *                           precedence, e.g. ",", ";=", or ",;="
      *

src/Symfony/Component/HttpFoundation/RequestMatcher.php

@@ -100,7 +100,7 @@ class RequestMatcher implements RequestMatcherInterface
      *
      * @param int|null $port The port number to connect to
      */
-    public function matchPort(int $port = null)
+    public function matchPort(?int $port)
     {
         $this->port = $port;
     }