[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
----------------------------------------------------------------------------
           Keywords|wrong-code                  |
          Component|dmd                         |druntime
         Resolution|WORKSFORME                  |FIXED

--- Comment #5 from ag0aep6g at gmail.com ---
Apparently this was actually a Druntime bug, and it was fixed by
https://github.com/dlang/druntime/pull/1952

New PR for the test:
https://github.com/dlang/druntime/pull/2064

--