RFR: Fix held_monitor_count calculation

Tue Jun 15 09:45:00 UTC 2021

On Tue, 15 Jun 2021 02:19:44 GMT, Hui Shi <hshi at openjdk.org> wrote:

>> Did any of the existing tests trip an assertion? I'm wondering if we need to add more tests here.
>
> @AlanBateman 
> As Loom PR is already in ready status implicitly.
> Should I wait an explicit aprroval and then waiting sponsor?

@huishi-hs Please add an `/integrate` comment so I could sponsor the PR.

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PR: https://git.openjdk.java.net/loom/pull/47