RFR: Avoid posting Jira link comments multiple times

[Erik Helin]

On Fri, 4 Sep 2020 13:22:52 GMT, Robin Westberg <rwestberg at openjdk.org> wrote:

> Hi all,
> 
> Please review this change that avoids potentially posting the same Jira link comment multiple times.
> 
> Best regards,
> Robin

Looks good!

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Marked as reviewed by ehelin (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/784