[Issue 18493] [betterC] Can't use aggregated type with postblit

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18493

--- Comment #2 from Radu Racariu <radu.racariu at gmail.com> ---
Even more reduced test case:
---
struct S
{
    this(this)
    {
    }

    ~this()
    {
    }
}

struct C
{
    S s1;
    S s2;
}
---

--