hg: jdk/jdk10: 8193622: JFR test TestUnloadingEventClass.java times out intermittently

[jesper.wilhelmsson at oracle.com]

Changeset: 5f1c30b80554
Author:    coleenp
Date:      2017-12-19 15:56 -0500
URL:       http://hg.openjdk.java.net/jdk/jdk10/rev/5f1c30b80554

8193622: JFR test TestUnloadingEventClass.java times out intermittently
Summary: Previous change was leaving scratch classes on CLD::_klasses list which are reported to tracing
Reviewed-by: gtriantafill, dcubed, mgronlun

! src/hotspot/share/classfile/classLoaderData.cpp