hg: jdk/jdk: 8233494: Avoid calling MallocTracker::record_malloc and record_free when NMT is off

[claes.redestad at oracle.com]

Changeset: d8aced36e872
Author:    redestad
Date:      2019-11-05 09:57 +0100
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/d8aced36e872

8233494: Avoid calling MallocTracker::record_malloc and record_free when NMT is off
Reviewed-by: mdoerr, zgu

! src/hotspot/share/runtime/os.cpp
! src/hotspot/share/services/mallocTracker.cpp
! src/hotspot/share/services/memTracker.cpp
! src/hotspot/share/services/memTracker.hpp