Bug in complex case of completion for `instanceof` variables on same line

Here is the case (open completion at the `|` after `req`); `requires` is suggested for completion despite the fact that `o` might not be a `RequiresDirective`.

```java
public class CompleteInInstanceof {

public void myMethod() {
Object o = null;
boolean a = (o instanceof RequiresDirective requires || 1 < 2) && useRequiresDirective(req|);
}

static class RequiresDirective {
private int a;
public RequiresDirective(int a) { this.a = a; }
int getA() { return a; }
}

public static boolean useRequiresDirective(RequiresDirective requiresDirective) {
return requiresDirective.getA() > 5;
}
}
```