git: openjdk/loom: fibers: Clean up use of EI_VIRTUAL_THREAD_START/END events. They are converted early on to THREAD_START/END, so we should never see them during event processing.

[duke]

Changeset: 11168db5
Author:    Chris Plummer <chris.plummer at oracle.com>
Date:      2022-02-25 22:11:37 +0000
URL:       https://git.openjdk.java.net/loom/commit/11168db5a2a3ec0c161b679b8cac5bdfb4545425

Clean up use of EI_VIRTUAL_THREAD_START/END events. They are converted early on to THREAD_START/END, so we should never see them during event processing.

! src/jdk.jdwp.agent/share/native/libjdwp/eventHelper.c
! src/jdk.jdwp.agent/share/native/libjdwp/standardHandlers.c