RFR: 8299973: Replace NULL with nullptr in share/utilities/ [v3]

[David Holmes]

On Wed, 18 Jan 2023 22:14:08 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

>> Johan Sjölen has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix incorrect copyrights, reverts change in file that was only comment
>
> src/hotspot/share/utilities/globalDefinitions.cpp line 162:
> 
>> 160:   static_assert((size_t)HeapWordSize >= sizeof(juint),
>> 161:                 "HeapWord should be at least as large as juint");
>> 162:   static_assert(sizeof(nullptr) == sizeof(char*), "nullptr must be same size as pointer");
> 
> Adding in another static_assert here so that both cases are represented.

Not sure this makes any sense for `nullptr`.

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