[Issue 21098] poor diagnostic when trying to assign a string literal to a `char*`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21098

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|poor diagnostic when trying |poor diagnostic when trying
                   |to assign a `string` to a   |to assign a string literal
                   |`char*`                     |to a `char*`

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