[Issue 22899] importC: extra parentheses in sizeof don't give an error with typedef types

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22899

--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
Fixing this is blocked by https://github.com/dlang/dmd/pull/13831

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