fix(runtime): use more null proto objects (#23921)

This is a primordialization effort to improve resistance against users
tampering with the global `Object` prototype.

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/ext/fetch/23_response.js b/ext/fetch/23_response.js
index a3805a97d..94fc69a98 100644
--- a/ext/fetch/23_response.js
+++ b/ext/fetch/23_response.js
@@ -282,7 +282,7 @@ class Response {
    * @param {ResponseInit} init
    * @returns {Response}
    */
-  static json(data = undefined, init = {}) {
+  static json(data = undefined, init = { __proto__: null }) {
     const prefix = "Failed to execute 'Response.json'";
     data = webidl.converters.any(data);
     init = webidl.converters["ResponseInit_fast"](init, prefix, "Argument 2");