RFR: 8194681: G1 uses young free cset time when reporting non-young free cset times

[Kim Barrett]

> On Jan 9, 2018, at 9:41 AM, Leo Korinth <leo.korinth at oracle.com> wrote:
> 
> Hi,
> 
> G1 uses young free cset time when reporting non-young free cset times. This patch is fixing the typo.
> 
> Bug:
> https://bugs.openjdk.java.net/browse/JDK-8194681
> 
> Webrev:
> http://cr.openjdk.java.net/~lkorinth/8194681/00/
> 
> Testing:
> - hs-tier1, hs-tier2
> 
> Thanks,
> Leo

Looks good.