[Issue 24838] A closure with a layout of pointer size or below that is not modified, should not have a closure

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24838

--- Comment #13 from Manu <turkeyman at gmail.com> ---
There is no closure creation when this case is detected.

@nogc does have something to do with the enhancement, because the enhancement
will make code that doesn't currently work in @nogc work after the fix... and
that's specifically why I need this fixed.

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