[compiler] Compile error with Eclipse, but not with javac

The following code compiles with `javac`, but not with eclipse:
```
import java.util.ArrayList;
import java.util.List;

public class Instanceof {

interface A {
//
}

interface B extends A {
//
}

interface Foo {
A getX();
}

public void test() {
List> list = new ArrayList<>();

// Compile error in the following line:
// "Type capture#1 of ? extends Instanceof.A cannot be safely cast to Instanceof.A
if (list.get(0) instanceof B) { // <== compile error with Eclipse, but not with javac
// do something
}

// No compile error
A item = list.get(0);
if (item instanceof B) {
// do something
}

}
}
```

Is there a workaround without changing the code?