Removed unneeded pattern matching

src/visitor.rs

@@ -209,7 +209,7 @@ fn visit_item(&mut self, item: &ast::Item) {
                 }
             }
             // FIXME(#78): format traits.
-            ast::Item_::ItemTrait(unsafety, ref generics, ref param_bounds, ref trait_items) => {
+            ast::Item_::ItemTrait(..) => {
                 self.format_missing_with_indent(item.span.lo);
                 if let Some(trait_str) = format_trait(&self.get_context(),
                                                       item,