ECJ fails to complain about a flexible constructor failing to initialize a blank final variable.

4.40, 4.41 M2 and master/HEAD all compile the following illegal program:

```
public class X {
final String s;

X(String s0) {
s = s0;
super();
}

X() {
System.out.println("Blah");
super();
}

public static void main(String... args) {
System.out.print(new X("OK").s);
}
}
```

Javac 26 and 28 EA versions correctly reject this with: `X.java:12: error: variable s might not have been initialized`

Note: both constructors are required to reproduce the problem.