Implicitly nullable parameters deprecated

Author: mbonneau

src/Handshake/ClientNegotiator.php

@@ -14,7 +14,7 @@ class ClientNegotiator {
 
     public function __construct(
         RequestFactoryInterface $requestFactory,
-        PermessageDeflateOptions $perMessageDeflateOptions = null
+        ?PermessageDeflateOptions $perMessageDeflateOptions = null
     ) {
         $this->verifier = new ResponseVerifier;
         $this->requestFactory = $requestFactory;

src/Messaging/Frame.php

@@ -67,7 +67,7 @@ class Frame implements FrameInterface {
      * @param int         $opcode
      * @param callable<\UnderflowException> $ufExceptionFactory
      */
-    public function __construct(?string $payload = null, bool $final = true, int $opcode = 1, callable $ufExceptionFactory = null) {
+    public function __construct(?string $payload = null, bool $final = true, int $opcode = 1, ?callable $ufExceptionFactory = null) {
         $this->ufeg = $ufExceptionFactory ?: static fn (string $msg = '') => new \UnderflowException($msg);
 
         if (null === $payload) {