[Issue 16739] switch ignores case

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=16739

ag0aep6g at gmail.com changed:

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

--- Comment #4 from ag0aep6g at gmail.com ---
Works for me now with 2.078.0. Pull request to add a test:
https://github.com/dlang/dmd/pull/7793

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