fix broken image test in safari
fix broken image test in safari

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