fix comment

git-svn-id: http://h2database.googlecode.com/svn/trunk@4900 e6896862-9d19-0410-bfb3-e9fa5d50e656
Fix NPE when attempting to add foreign key reference to Table View.


git-svn-id: http://h2database.googlecode.com/svn/trunk@4901 e6896862-9d19-0410-bfb3-e9fa5d50e656