[Issue 18171] std.functional.toDelegate should be usable in @safe

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18171

Steven Schveighoffer <schveiguy at gmail.com> changed:

           What    |Removed                     |Added
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           See Also|                            |https://issues.dlang.org/sh
                   |                            |ow_bug.cgi?id=23322

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