Remove another explicit NPE.  I'm not re-ordering the bounds checking
here as it turns out:

      String s = new String((int[])null, -1, 0);

and:

      String s = new String((int[])null, 0, -1);

on the RI throw IndexOutOfBoundsException not NullPointerException.
So the behaviour before did not match the RI.


git-svn-id: https://svn.apache.org/repos/asf/harmony/enhanced/java/trunk@1005651 13f79535-47bb-0310-9956-ffa450edef68