[Issue 21668] Cannot declare ref parameter of opaque type

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21668

--- Comment #2 from Dlang Bot <dlang-bot at dlang.rocks> ---
@MoonlightSentinel created dlang/dmd pull request #12240 "Fix 14954 - extern
opaque struct instance doesn't compile" fixing this issue:

- Fix 21668 - Cannot declare ref parameter of opaque type

  Don't raise errors for VarDeclarations that are marked as ref

https://github.com/dlang/dmd/pull/12240

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