Fix trailing whitespace tidy errors

components/script/dom/bindings/trace.rs

@@ -22,7 +22,7 @@
 //! 5. `trace_object()` calls `JS_CallTracer()` to notify the GC, which will
 //!    add the object to the graph, and will trace that object as well.
 //!
-//! The untraceable!() macro adds an empty implementation of JSTraceable to 
+//! The untraceable!() macro adds an empty implementation of JSTraceable to
 //! a datatype.
 
 use dom::bindings::js::JS;
@@ -236,4 +236,5 @@ impl<'a> JSTraceable for &'a str {
     fn trace(&self, _: *mut JSTracer) {
         // Do nothing
     }
-}
+}
+

components/script/dom/macros.rs

@@ -63,4 +63,5 @@ macro_rules! untraceable(
             }
         }
     );
-)
+)
+