hg: shenandoah/jdk: Silence compilation warnings on implicit type conversion

[zgu at redhat.com]

Changeset: b67a4350c0b0
Author:    zgu
Date:      2018-09-04 12:47 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/b67a4350c0b0

Silence compilation warnings on implicit type conversion

! src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp
! src/hotspot/share/gc/shenandoah/shenandoah_globals.hpp