[Issue 19060] [REG2.081] Incorrect "Using this as a type is deprecated" error

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19060

--- Comment #5 from johanengelen at weka.io ---
OK, then this is still broken and should receive a deprecation message too:

```
struct S {
    int a;
    bool x;
    public ref foo() {
        alias yoyo = this.x;
        return yoyo;
    }
}
```

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