8223813: (aio) Iocp.getErrorMessage should drop trailing \r\n

[Brian Burkhalter]

Actually, never mind, I am being completely lame here: both NET_ThrowNew() and the Windows function LocalFree() are robust to a NULL-valued buf so I think we can just remove the n > 0 or buf == NULL check altogether.

Sorry for the noise: I should have checked this first.

Thanks,

Brian

> On Jun 12, 2019, at 9:51 AM, Brian Burkhalter <brian.burkhalter at oracle.com> wrote:
> 
> I am perhaps beating a dead horse here, but how about this instead?
> 
>                 if (n > 0) {
>                     NET_ThrowNew(env, err, buf);
>                     LocalFree(buf);
>                 } else {
>                     NET_ThrowNew(env, err, "FormatMessage failed");
>                 }
> 
> After all, an error *did* occur.

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