hg: jdk/sandbox: Fix gc/class_unloading/TestG1ClassUnloadingHWM

[thomas.stuefe at gmail.com]

Changeset: bbea915b64c5
Author:    stuefe
Date:      2020-07-29 09:20 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/bbea915b64c5

Fix gc/class_unloading/TestG1ClassUnloadingHWM

! src/hotspot/share/prims/whitebox.cpp
! test/hotspot/jtreg/gc/class_unloading/TestG1ClassUnloadingHWM.java
! test/lib/sun/hotspot/WhiteBox.java