hg: shenandoah/jdk9/hotspot: [Backport] Fixed assertion failures when printing heap region to trace output

[zgu at redhat.com]

Changeset: 73a99cd46a28
Author:    zgu
Date:      2017-08-10 08:26 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/73a99cd46a28

[Backport] Fixed assertion failures when printing heap region to trace output

! src/share/vm/gc/shenandoah/shenandoahHeap.cpp