Nested class cannot be constructed through outer class reference when in outer class

When trying to compile this using ecj and javac only javac successfully compiles.
Replacing `new Outer.Inner();` with `this.new Inner();` fixes the compile error along with specifying the `.Inner>` as a generic in the `mapToObj` method call.
```java
public class Outer {
public void main(String[] args) {
Stream.Inner> stream = IntStream.range(0, 10).mapToObj((num) -> {
return new Outer.Inner();
});
}

public class Inner {
}
}
```