RFR: 8262486: Merge trivial JDWP agent changes from the loom repo to the jdk repo [v2]

[Chris Plummer]

On Wed, 3 Mar 2021 23:24:52 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

>> Chris Plummer has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Minor jdwp agent edits from loom project.
>
> Marked as reviewed by amenkov (Reviewer).

@alexmenkov @lmesnik I made a couple of very minor edits. Can you please approve them. Thanks!

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PR: https://git.openjdk.java.net/jdk/pull/2815