hg: jdk/submit: 8234328: VectorSet::clear can cause fragmentation

[claes.redestad at oracle.com]

Changeset: fe65e995a765
Author:    redestad
Date:      2019-12-12 14:22 +0100
URL:       https://hg.openjdk.java.net/jdk/submit/rev/fe65e995a765

8234328: VectorSet::clear can cause fragmentation
Reviewed-by: neliasso

! src/hotspot/share/libadt/vectset.cpp
! src/hotspot/share/libadt/vectset.hpp