git: openjdk/loom: fibers: Fix build

[duke]

Changeset: 1e55270d
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2021-04-09 21:11:48 +0000
URL:       https://git.openjdk.java.net/loom/commit/1e55270d

Fix build

! src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp