[Issue 18585] Linker error if compiled with -dip1000

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18585
Issue 18585 depends on issue 17961, which changed state.

Issue 17961 Summary: std.uni does not compile with -unittest -dip1000
https://issues.dlang.org/show_bug.cgi?id=17961

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

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