Redirect if no action given.

git-svn-id: https://develop.svn.wordpress.org/trunk@3683 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/post.php

@@ -146,6 +146,8 @@ case 'delete':
 	break;
 
 default:
+	header('Location: edit.php');
+	exit();
 	break;
 } // end switch
 include('admin-footer.php');