RFR: 8299973: Replace NULL with nullptr in share/utilities/

[Coleen Phillimore]

On Wed, 18 Jan 2023 22:11:17 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

>> Do the conversion in the share/utilities sub-directory and all of its files.
>
> src/hotspot/share/utilities/debug.cpp line 425:
> 
>> 423:   CodeBlob* cb = CodeCache::find_blob((address)p);
>> 424:   if (cb == nullptr) {
>> 425:     tty->print_cr("nullptr");
> 
> Changes log, OK?

I think it's ok. Unless we have tests that check for NULL, but they're likely in gtests and you'll find them pretty quickly and can fix them pretty quickly if they slip through.

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