RFR: 2091: CheckRun fails with NPE if github fullName is null

[Zhao Song]

On Thu, 2 Nov 2023 19:24:53 GMT, Zhao Song <zsong at openjdk.org> wrote:

> If a user doesn't set name in the GitHub profile, when the bot is trying to get the full name of the user, the bot would get `null` and in some cases, it will trigger NPE.
> 
> To solve this problem, I think if the user doesn't set name, then the bot should use his username instead.

Thanks for the quick review!

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PR Comment: https://git.openjdk.org/skara/pull/1582#issuecomment-1791447074