[Issue 18746] function returning empty struct isn't called if used in equality expression

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18746

--- Comment #1 from RazvanN <razvan.nitu1305 at gmail.com> ---
PR : https://github.com/dlang/dmd/pull/8153

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