hg: shenandoah/jdk: Skipping null strings when popping dedup string candidates

[zgu at redhat.com]

Changeset: 3880ad7cb0be
Author:    zgu
Date:      2018-07-17 07:27 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/3880ad7cb0be

Skipping null strings when popping dedup string candidates

! src/hotspot/share/gc/shenandoah/shenandoahStrDedupQueue.cpp
! src/hotspot/share/gc/shenandoah/shenandoahStrDedupQueue.hpp