[Issue 15161] Parser bug on ref delegates

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15161

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

           What    |Removed                     |Added
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           Keywords|rejects-valid               |

--- Comment #1 from Basile-z <b2.temp at gmx.com> ---
It parses, the error is output during dsymbol semantic.
The ref is not a MemberFunctionAttribute it's a storage class of the type of a
VarDeclaration, which is a noop. The ref you want would actually have to placed
after the `delegate()`, as a MemberFunctionAttribute, but this is illegal.

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