hg: shenandoah/jdk: Fix non-PCH x86_32 build failure

[ashipile at redhat.com]

Changeset: aab04b01aec9
Author:    shade
Date:      2018-04-25 10:21 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/aab04b01aec9

Fix non-PCH x86_32 build failure

! src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp