Fix typo

Author: christiaangoossens

src/Grant/AuthCodeGrant.php

@@ -391,7 +391,7 @@ protected function getExtraAuthCodeParams(AuthorizationRequest $authorizationReq
      *
      * @param object $authCodePayload
      */
-    protected function handleExtraAuthCodeParams(object $authCodePayload)
+    protected function handleExtraAuthCodeParams(\stdClass $authCodePayload)
     {
     }
 }