[Issue 15691] Improve error message for struct member initializer

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15691

RazvanN <razvan.nitu1305 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |razvan.nitu1305 at gmail.com

--- Comment #1 from RazvanN <razvan.nitu1305 at gmail.com> ---
PR: https://github.com/dlang/dmd/pull/8352

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