hg: jdk/sandbox: 8213711: Zero build broken after JDK-8213199 (GC abstraction for Assembler::needs_explicit_null_check())

[chris.hegarty at oracle.com]

Changeset: 18bd95c0e463
Author:    shade
Date:      2018-11-10 19:27 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/18bd95c0e463

8213711: Zero build broken after JDK-8213199 (GC abstraction for Assembler::needs_explicit_null_check())
Reviewed-by: rkennke, stuefe

! src/hotspot/cpu/zero/assembler_zero.hpp