git: openjdk/jdk: 8323629: Shenandoah: Fix missing include and declaration

[Paul Hohensee]

Changeset: e33031b8
Author:    William Kemper <wkemper at openjdk.org>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2024-01-12 17:04:51 +0000
URL:       https://git.openjdk.org/jdk/commit/e33031b850dfd2daacb5ccf2bda265edec3ffe50

8323629: Shenandoah: Fix missing include and declaration

Reviewed-by: ysr, kdnilsen, phh

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
! src/hotspot/share/gc/shenandoah/shenandoahPacer.hpp
! src/hotspot/share/gc/shenandoah/shenandoahTaskqueue.hpp