Fixed: Empty template path bug

git-svn-id: https://plugins.svn.wordpress.org/hierarchical-navigation-widget/trunk@859207 b8457f37-d9ea-0310-8a92-e5e31aec5664
Small patch

git-svn-id: https://plugins.svn.wordpress.org/hierarchical-navigation-widget/trunk@859210 b8457f37-d9ea-0310-8a92-e5e31aec5664