RFR [sh/8h]: Fix signatures of ShLRBNode::Value() and ::Identity()

[Roman Kennke]

Nevermind this one. Roland already pushed that fix.

Roman


> After the LRB backport, we saw a regression in one of our tests. The
> root cause is that ShLRBNode::Value() and ::Identity() have changed
> signatures between 8 and 11 and I did not pick that up in 8u backport
> and thus those methods never have been called.
> 
> Webrev:
> http://cr.openjdk.java.net/~rkennke/fixsigs/webrev.00/
> Testing:
> The failing test passes now. hotspot_gc_shenandoah
> 
> Ok to push?
> 
> Thanks,
> Roman
>