hg: shenandoah/jdk9/hotspot: Fix condition in debug output

[roman at kennke.org]

Changeset: 378614c6192d
Author:    rkennke
Date:      2016-07-12 17:16 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/378614c6192d

Fix condition in debug output

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