hg: shenandoah/jdk9/hotspot: Backed out changeset 8c81792a5cd5: Avoid null checking twice in concurrent marking.

[roman at kennke.org]

Changeset: 63d3718a1a42
Author:    rkennke
Date:      2016-04-07 12:56 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/63d3718a1a42

Backed out changeset 8c81792a5cd5: Avoid null checking twice in concurrent marking.

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.inline.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.hpp