[Issue 9218] [2.061] Correct signature of struct opCmp no longer accepts enum structs

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=9218
Issue 9218 depends on issue 9238, which changed state.

Issue 9238 Summary: Support rvalue references
https://issues.dlang.org/show_bug.cgi?id=9238

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

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