hg: jdk/jdk: 8222086: CodeCache::UnloadingScope needs to preserve and restore previous IsUnloadingBehavior

[zgu at redhat.com]

Changeset: ba0d64652b86
Author:    zgu
Date:      2019-04-08 13:22 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/ba0d64652b86

8222086: CodeCache::UnloadingScope needs to preserve and restore previous IsUnloadingBehavior
Reviewed-by: eosterlund

! src/hotspot/share/code/codeCache.cpp
! src/hotspot/share/code/codeCache.hpp