git: openjdk/loom: fibers: Fix notifyvthreads flas so it actually does what it's suppose to when set to 'n'.

[duke]

Changeset: f5afce00
Author:    Chris Plummer <chris.plummer at oracle.com>
Date:      2021-04-13 21:50:06 +0000
URL:       https://git.openjdk.java.net/loom/commit/f5afce00

Fix notifyvthreads flas so it actually does what it's suppose to when set to 'n'.

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