Fixes issue #1005; TreeItem.setState(true) no longer throws an exception if the item has no parent.

Found by: dave.rodgman
Review by: knorton


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1057 8db76d5a-ed1c-0410-87a9-c151d255dfc7
1 file changed