hg: shenandoah/jdk: Quick-fix C1 assert with cherry-picked '8213199: GC abstraction for Assembler::needs_explicit_null_check()'

[roman at kennke.org]

Changeset: 2c13e3e13775
Author:    rkennke
Date:      2018-11-13 13:30 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/2c13e3e13775

Quick-fix C1 assert with cherry-picked '8213199: GC abstraction for Assembler::needs_explicit_null_check()'

! src/hotspot/share/asm/assembler.cpp