RFR: JDK-8189271: Metaspace::_capacity_until_GC should be size_t

[Thomas Schatzl]

Hi,

On Tue, 2018-05-15 at 12:59 -0400, Alexander Harlap wrote:
> Small cleanup suggested by Coleen.
> 
> Webrev: http://cr.openjdk.java.net/~aharlap/8189271/webrev.00/
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8189271
> 
> Tested by running standard build and test
> 

  looks good.

Thomas