hg: jdk/submit: 8189271: Metaspace::_capacity_until_GC should be size_t

[kim.barrett at oracle.com]

Changeset: bf9177eac58d
Author:    aharlap
Date:      2018-05-15 19:26 -0400
URL:       http://hg.openjdk.java.net/jdk/submit/rev/bf9177eac58d

8189271: Metaspace::_capacity_until_GC should be size_t
Summary: Change of member and some related local variables.
Reviewed-by: tschatzl, stuefe

! src/hotspot/share/memory/metaspace.cpp
! src/hotspot/share/memory/metaspace.hpp