1b795f6f0a
before setting a new one. This is needed because sometimes the mouseExited will not be called for the previous component, for example if it was hidden or a tab changed as a result of the drag over. git-svn-id: https://samskivert.googlecode.com/svn/trunk@1164 6335cc39-0255-0410-8fd6-9bcaacd3b74c