fix issue 12001 - __traits(isSame) does not work with the basic types

[ghost]

Very surprisingly not already fixed. As rationale, I quote the reporter:

...It really should be true ... to be useful in generic code.

[dlang-bot]

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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	12001	normal	__traits(isSame) does not work with the basic types

Testing this PR locally

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

dub fetch digger
dub run digger -- build "master + dmd#9356"

[ghost]

Sorry I didn't see the failure after running locally the test, So not ready yet.

[thewilsonator]

OK ping me when it is.

[ghost]

Ping @thewilsonator this is working now. It was a getType() vs isType() problem, the former always falls back to something, which i should know...

[thewilsonator]

Done.