TINY-1483: fix memory leak in FocusController
TINY-1483: fix memory leak in FocusController

tinymce/tinymce,FernCreek/tinymce,danielpunkass/tinymce,FernCreek/tinymce,tinymce/tinymce,TeamupCom/tinymce,danielpunkass/tinymce,TeamupCom/tinymce,FernCreek/tinymce,tinymce/tinymce,danielpunkass/tinymce