hg: jdk/jdk13: 8227041: runtime/memory/RunUnitTestsConcurrently.java has a memory leak

[christoph.langer at sap.com]

Changeset: 6236826e44c3
Author:    stuefe
Date:      2019-07-02 10:28 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk13/rev/6236826e44c3

8227041: runtime/memory/RunUnitTestsConcurrently.java has a memory leak
Reviewed-by: stefank, coleenp

! src/hotspot/share/memory/metaspace.cpp
! src/hotspot/share/prims/whitebox.cpp