Bug Description

unidict leaked if using Request, for example:

export function create_fetch({ event, options, state, get_cookie_header }) {
	return async (info, init) => {
		return await fetch(new Request(info, init));
	};
}

I found it in SvelteKit inside this issue sveltejs/kit#8239

Reproducible By

See SvelteKit issue.

Environment

Ubuntu and Gentoo with the latest node 18