git: openjdk/loom: fibers: Fix issue with not sending THREAD_END events for vthreads that we sent THREAD_START event for.

[duke]

Changeset: 89eac2b9
Author:    Chris Plummer <chris.plummer at oracle.com>
Date:      2021-12-02 03:27:30 +0000
URL:       https://git.openjdk.java.net/loom/commit/89eac2b9878e488ac82da57971003c879e99d9d8

Fix issue with not sending THREAD_END events for vthreads that we sent THREAD_START event for.

! src/jdk.jdwp.agent/share/native/libjdwp/eventHandler.c
! src/jdk.jdwp.agent/share/native/libjdwp/threadControl.c