hg: shenandoah/jdk10: Optimize oop/fwdptr/hr_index verification a bit

[ashipile at redhat.com]

Changeset: b81c043a63cd
Author:    shade
Date:      2017-12-05 16:38 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/rev/b81c043a63cd

Optimize oop/fwdptr/hr_index verification a bit

! src/hotspot/share/gc/shenandoah/brooksPointer.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahVerifier.cpp
! src/hotspot/share/gc/shenandoah/shenandoahVerifier.hpp