8258753: StartTlsResponse.close() hangs due to synchronization issues

[yan-too]

I'd like to backport this fix here, too. The patch applies cleanly, tier tests run OK.

---

Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8258753: StartTlsResponse.close() hangs due to synchronization issues

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk15u-dev pull/85/head:pull/85
$ git checkout pull/85

Update a local copy of the PR:
$ git checkout pull/85
$ git pull https://git.openjdk.java.net/jdk15u-dev pull/85/head

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Checkout this PR locally:
$ git pr checkout 85

View PR using the GUI difftool:
$ git pr show -t 85

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk15u-dev/pull/85.diff

[bridgekeeper]

👋 Welcome back yan! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@yan-too This change now passes all automated pre-integration checks.

After integration, the commit message for the final commit will be:

8258753: StartTlsResponse.close() hangs due to synchronization issues

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

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[mlbridge]

Webrevs

• 00: Full (15da4b15)

[yan-too]

/integrate

[openjdk]

Going to push as commit 028242b.

[openjdk]

@yan-too Pushed as commit 028242b.

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