[9] Review request for 8078614 WindowsClassicLookAndFeel : MetalComboBoxUI.getbaseLine fails with IllegalArgumentException

[Victor D'yakov]

Hello,

Please review the fix for JDK9:
bug: https://bugs.openjdk.java.net/browse/JDK-8078614
webrev link: 
http://cr.openjdk.java.net/~alexsch/victor-dyakov/8078614/webrev.00/
Root Cause:
    The case where the height can be less than insets top+bottom is not 
checked.
Solution:
    Return 0 for case where the height is less than insets top+bottom.
Testing:
    Run test/javax/swing/JComboBox/6632953/bug6632953.java automated test.
--
Victor