hg: jdk/sandbox: 8241153: Refactor HeapRegionManager::find_unavailable_from_idx to simplify expand_at

[chris.hegarty at oracle.com]

Changeset: cf8b50c400be
Author:    sjohanss
Date:      2020-04-24 14:39 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/cf8b50c400be

8241153: Refactor HeapRegionManager::find_unavailable_from_idx to simplify expand_at
Reviewed-by: tschatzl, sangheki

! src/hotspot/share/gc/g1/heapRegionManager.cpp
! src/hotspot/share/gc/g1/heapRegionManager.hpp