RFR (XXS): 8252086: G1: Remove g1_rs in G1CollectedHeap::initialize

[Kim Barrett]

> On Aug 20, 2020, at 6:06 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> 
> Hi,
> 
>  can I have reviews for this small change that removes an intermediate local variable from G1CollectedHeap::initialize?
> 
> This makes it easier to follow that CollectedHeap::_reserved is the same as HeapRegionManager::reserved().
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8252086
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8252086/webrev/
> Testing:
> local compilation, local jtreg gc/g1 directory
> 
> Thanks,
>  Thomas

Looks good.