fix Issue 14114 - Allow volatileLoad/Store to access null location

[WalterBright]

No description provided.

[dlang-bot]

Thanks for your pull request, @WalterBright!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	14114	blocker	Allow volatileLoad/Store to access null location

⚠️⚠️⚠️ Warnings ⚠️⚠️⚠️

• Regression or critical bug fixes should always target the stable branch. Learn more about rebasing to stable or the D release process.

To target stable perform these two steps:

1. Rebase your branch to upstream/stable:

git rebase --onto upstream/stable upstream/master

2. Change the base branch of your PR to stable

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub run digger -- build "master + dmd#12396"

[WalterBright]

Not really necessary to send a 6 year old bug fix to stable.

[thewilsonator]

compilable\test14114.d(8): Deprecation: alias `core.bitop.volatileLoad` is deprecated - volatileLoad has been moved to core.volatile. Use core.volatile.volatileLoad instead.
compilable\test14114.d(9): Deprecation: alias `core.bitop.volatileStore` is deprecated - volatileStore has been moved to core.volatile. Use core.volatile.volatileStore instead.