git: openjdk/loom: fibers: get rid of tmp check of cont.done in JVMTI JvmtiEnvBase::is_vthread_alive

[duke]

Changeset: 833a0f24
Author:    Serguei Spitsyn <serguei.spitsyn at oracle.com>
Date:      2021-08-20 17:47:29 +0000
URL:       https://git.openjdk.java.net/loom/commit/833a0f24a615d6cc544329bfb004cbfa55ceb644

get rid of tmp check of cont.done in JVMTI JvmtiEnvBase::is_vthread_alive

! src/hotspot/share/prims/jvmtiEnvBase.cpp