endpointCompression url construction issue

[mergut]

When gzip compression is enabled, the following code fails if prebid is running inside a friendly iframe (location.origin is 'null').

The main issue here is that "request.url" is an absolute url so the second parameter to URL constructor is irrelevant, should be removed.

Prebid.js/src/adapters/bidderFactory.js

Line 529 in 2e6af5d

const url = new URL(request.url, window.location.origin);

Affects version 9 and 10.

From URL documentation:

url parameter:
A string or any other object with a stringifier that represents an absolute URL or a relative reference to a base URL. If url is a relative reference, base is required, and is used to resolve the final URL. If url is an absolute URL, a given base will not be used to create the resulting URL.

https://developer.mozilla.org/en-US/docs/Web/API/URL/URL