RFR: 8299973: Replace NULL with nullptr in share/utilities/ [v2]

[Stefan Karlsson]

On Thu, 19 Jan 2023 09:02:05 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

>> Do the conversion in the share/utilities sub-directory and all of its files.
>
> Johan Sjölen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   More manual fixes

Marked as reviewed by stefank (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/12015