RFR(XS): Fix issue with "8199852: Print more information about class loaders in LinkageErrors."

[Lois Foltan]

Looks good.
Lois

On 5/18/2018 5:09 AM, Lindenmaier, Goetz wrote:
> Hi,
>
> Unfortunately I need to do a small follow up for my LinkageError change.
> If parentNameOop is NULL, parentName remains NULL. It should be set to <unnamed>.
> I actually saw a crash on solaris x86_64 with this.
> I also remove some dead, leftover variables.
>
> Please review:
> http://cr.openjdk.java.net/~goetz/wr18/8203400-exMsg-fixLinkageError/01/
>
> Best regards,
>    Goetz.