RFR: 7105883: JDWP: agent crash if there exists a ThreadGroup with null name

[Jaroslav Bachorik]

Looks good to me. (not a reviewer)

A small nit - in the test the copyright year should be only 2013 
(instead of "2003, 2013")

-JB-

On 14.10.2013 14:44, Erik Gahlin wrote:
> Hi,
>
> Could I please have a review of this fix.
>
> An empty string is returned if the thread name is null. The protocol
> should be updated to support INVALID_STRING for the Thread Reference
> Command <#Error_INVALID_STRING>, but that is a larger effort and
> probably better to do when fixing other protocol changes. An empty
> string is better than a crash.
>
> Thanks
> Erik
>
> Webrev:
> http://cr.openjdk.java.net/~egahlin/7105883/
>
> Bug:
> https://bugs.openjdk.java.net/browse/JDK-7105883
>
>