[Issue 23989] Regression in rdmd when running an empty eval

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23989

--- Comment #2 from deadalnix <deadalnix at gmail.com> ---
Something used to work.

Now it doesn't work.

None of the input provided contains either a `{}` or a `;`, so clearly the the
user supplied code isn't at fault.

If rdmd generates something that is now invalid, then this is rdmd's problem.

It's 100% a regression.

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