Ignore clicks on the expando-node portion of a leaf node.  Fixes #3949.
Ignore clicks on the expando-node portion of a leaf node.  Fixes #3949.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@9921 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful