[Issue 19210] Poor error message for `return` function parameter that is not `ref`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19210

Mike Franklin <slavo5150 at yahoo.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |safe
           Severity|enhancement                 |normal

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