[jdk20] RFR: 8299015: Ensure that HttpResponse.BodySubscribers.ofFile writes all bytes

[Jaikiran Pai]

On Wed, 21 Dec 2022 23:08:08 GMT, Chris Hegarty <chegar at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [a7d6de71](https://github.com/openjdk/jdk/commit/a7d6de71bb83c8715654f61dd166aad6e8dab847) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Chris Hegarty on 21 Dec 2022 and was reviewed by Daniel Fuchs, Daniel Jeliński and Jaikiran Pai.
> 
> Thanks

I compared the diff of this change against the commit that was done in mainline https://github.com/openjdk/jdk/commit/a7d6de71bb83c8715654f61dd166aad6e8dab847 and they certainly match.

I'll run this change against JDK 20 CI just to be sure and will reply back with the results.

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PR: https://git.openjdk.org/jdk20/pull/70