Cleanup

src/librustdoc/clean/mod.rs

@@ -1901,7 +1901,8 @@ fn clean(&self, cx: &DocContext) -> FnDecl {
             vec![].into_iter()
         } else {
             cx.tcx.fn_arg_names(did).into_iter()
-        }.peekable();
+        };
+
         FnDecl {
             output: Return(sig.skip_binder().output().clean(cx)),
             attrs: Attributes::default(),

src/librustdoc/html/format.rs

@@ -581,7 +581,7 @@ fn fmt_type(t: &clean::Type, f: &mut fmt::Formatter, use_absolute: bool) -> fmt:
                 }
                 many => {
                     primitive_link(f, PrimitiveType::Tuple, "(")?;
-                    fmt::Display::fmt(&CommaSep(&many), f)?;
+                    fmt::Display::fmt(&CommaSep(many), f)?;
                     primitive_link(f, PrimitiveType::Tuple, ")")
                 }
             }
@@ -667,18 +667,7 @@ fn fmt_type(t: &clean::Type, f: &mut fmt::Formatter, use_absolute: bool) -> fmt:
             }
         }
         clean::ImplTrait(ref bounds) => {
-            write!(f, "impl ")?;
-            for (i, bound) in bounds.iter().enumerate() {
-                if i != 0 {
-                    write!(f, " + ")?;
-                }
-                if f.alternate() {
-                    write!(f, "{:#}", *bound)?;
-                } else {
-                    write!(f, "{}", *bound)?;
-                }
-            }
-            Ok(())
+            write!(f, "impl {}", TyParamBounds(bounds))
         }
         clean::QPath { ref name, ref self_type, ref trait_ } => {
             let should_show_cast = match *trait_ {