[fetch] Re-arrange some HTTP-network Fetch substeps (#176)

In HTTP-network Fetch[1] step 4, the final set of substeps (starting with "Run these substeps in parallel") would be better moved out of step 4, which is already covering a lot, and to step 10. The current step 10 would become step 11. The new step 10 wouldn't need the "after the outer set of steps has returned" clause anymore, which would help make it straightforward.

[1] https://fetch.spec.whatwg.org/#http-network-fetch

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fetch/issues/176