Duplicate `null can't be used as basic type` error with disabled analyzer

```haxe
function main() {
var a = 0;
if (a == null) {}
}
```

--main Main
--cpp bin/cpp

Reproduce the issue from the provided Haxe snippet using `--main Main` and `--cpp bin/cpp`, with the analyzer disabled. Inspect the compiler diagnostic path for the `null can't be used as basic type` message and determine why it is emitted twice. Done means the reproduction reports the error only once.

Written by the indexing model from the issue text.