[Issue 21369] Compiler doesn't allow lvalues via alias this when wrapper is an rvalue

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21369

--- Comment #3 from Steven Schveighoffer <schveiguy at gmail.com> ---
(In reply to apham from comment #2)
> Create temp var is OK

That doesn't trigger the bug because then s is an lvalue.

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