[Issue 23214] New: ImportC: typedef with unsigned types doesn't compile

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23214

          Issue ID: 23214
           Summary: ImportC: typedef with unsigned types doesn't compile
           Product: D
           Version: D2
          Hardware: x86_64
                OS: All
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: ryuukk.dev at gmail.com

The following doesn't compile: 


```
typedef unsigned __int64 uintptr_t;
```

Error: missing comma or semicolon after declaration of `__anonymous`, found
`uintptr_t` instead

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