git: openjdk/loom: fibers: Minor refactoring

[duke]

Changeset: 5a3bd13d
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2020-12-04 11:48:37 +0000
URL:       https://git.openjdk.java.net/loom/commit/5a3bd13d

Minor refactoring

! src/hotspot/share/runtime/continuation.cpp
! src/hotspot/share/runtime/continuation.hpp
! src/hotspot/share/runtime/vframe.cpp