RFR 8202171: Some oopDesc functions compare this with NULL

[Kim Barrett]

> On Jul 25, 2018, at 2:56 PM, Harold David Seigel <harold.seigel at oracle.com> wrote:
> 
> Hi,
> 
> Please review this updated webrev:
> 
>   http://cr.openjdk.java.net/~hseigel/bug_8202171.2/webrev/index.html
> 
> This includes null checks when needed for callers to nonstatic oopDesc::print() and oopDesc::print_on() functions and changes the oopDesc verify() functions to static.
> 
> Thanks, Harold
> 

Looks good.