[Issue 24121] ImportC: typedef enum fails to compile when generating .di file

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24121

--- Comment #4 from Walter Bright <bugzilla at digitalmars.com> ---
Adam and Bruce have convinced me that there is indeed a need for C to di
conversion, so I'll see about addressing this.

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