Review request for 6949414 JMenu.buildMenuElementArray() endless loop

[Alexander Scherbatiy]

Hello,
Could you review the fix:
  bug: https://bugs.openjdk.java.net/browse/JDK-6949414
  webrev: http://cr.openjdk.java.net/~alexsch/6949414/webrev.00

  The endless loop in JMenu.buildMenuElementArray() method that 
JPopupMenu can be created without JMenuBar is fixed.
  NPE that JPopupMenu does not necessary have ancestor window is fixed.


Thanks,
Alexandr.