[Issue 19783] Fail to emplace struct with betterC

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19783

--- Comment #2 from Tomáš Chaloupka <chalucha at gmail.com> ---
For the record, this works (uses different template):

auto pf = (cast(Foo*)malloc(Foo.sizeof)).emplace!Foo(42);

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