[Issue 15692] Allow struct member initializer everywhere

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15692

Basile-z <b2.temp at gmx.com> changed:

           What    |Removed                     |Added
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                 CC|                            |b2.temp at gmx.com

--- Comment #6 from Basile-z <b2.temp at gmx.com> ---
Another use case is with mixin expressions:

---
struct S
{
    int i;
}

void main()
{
    S s = mixin(`{1}`);
}
---

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