safety comment formatting

src/layout/widgets.rs

@@ -35,7 +35,7 @@ impl Widgets {
     /// get_dyn but dynamic borrow checking of widgets
     /// lets you do recursive (tree) operations, like the painter does
     pub fn get_dyn_dynamic(&self, id: &Id) -> WidgetWrapper<'_> {
-        // must guarantee no other mutable references to this widget exist
+        // SAFETY: must guarantee no other mutable references to this widget exist
         // done through the borrow variable
         let data: &mut WidgetData = unsafe { std::mem::transmute(self.map.get(id)) };
         if data.borrowed {