RFR (S): 8209843: Optimize oop scan closure closures wrt to reference processing in G1

[Per Liden]

Hi Thomas,

On 09/04/2018 12:35 PM, Thomas Schatzl wrote:
[...]
> As for asserting, this leaves us with Per's suggestion that I
> implemented at
> 
> http://cr.openjdk.java.net/~tschatzl/8209843/webrev.1/ (full only,
> sorry, but the change is very small)

Looks good to me.

/Per