[Issue 704] `class` destructor is called even if constructor throws

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=704

--- Comment #14 from anonymous4 <dfj1esp02 at sneakemail.com> ---
(In reply to Steven Schveighoffer from comment #13)
> (what the dtor is expecting)

D has options there unlike C++.

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