[Issue 13871] [REG] Segmentation fault from std/variant.d:609

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13871

--- Comment #3 from Dicebot <public at dicebot.lv> ---
Reduced test case:

---
import std.variant;

alias A = Algebraic!(int, typeof(null));

struct B { A value; }

alias C = std.variant.Algebraic!B;

void main()
{
   C var;
   var = C( B() );
}
---

Crashes with master, works with last release

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