[Issue 18554] `tupleof` ignoring `private` shouldn't be accepted in @safe code

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18554

ag0aep6g <ag0aep6g at gmail.com> changed:

           What    |Removed                     |Added
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           See Also|                            |https://issues.dlang.org/sh
                   |                            |ow_bug.cgi?id=22137

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