RFR: 8296463: Memory leak in JVM_StartThread with the integration of Virtual threads

[Coleen Phillimore]

On Wed, 16 Nov 2022 22:10:18 GMT, David Holmes <dholmes at openjdk.org> wrote:

> Please review this simple fix that removes a memory leak. The _extentLocalCache OopHandle was not being released when a JavaThread was destroyed.
> 
> Testing:
>  - manual leak checking with NMT
>  -  tier1 (sanity)
> Thanks.

Marked as reviewed by coleenp (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11198