RFR(T) : 8209917 : fix TODO in GatherDiagnosticInfoObserver

[Igor Ignatyev]

ping.

> On Jun 5, 2019, at 6:46 PM, Igor Ignatyev <igor.ignatyev at oracle.com> wrote:
> 
> http://cr.openjdk.java.net/~iignatyev//8209917/webrev.00/index.html
>> 11 lines changed: 0 ins; 3 del; 8 mod; 
> 
> Hi all,
> 
> could you please review this small and trivial clean up in failure_handler library?
> 
> webrev: http://cr.openjdk.java.net/~iignatyev//8209917/webrev.00/index.html
> JBS: https://bugs.openjdk.java.net/browse/JDK-8209917
> testing: make test TEST=failure-handler; tier1
> 
> Thanks,
> -- Igor