Use field init shorthand

Author: phimuemue

src/intersperse.rs

@@ -62,7 +62,7 @@ pub fn intersperse_with<I, ElemF>(iter: I, elt: ElemF) -> IntersperseWith<I, Ele
     let mut iter = iter.fuse();
     IntersperseWith {
         peek: iter.next(),
-        iter: iter,
+        iter,
         element: elt,
     }
 }

src/tuple_impl.rs

@@ -212,7 +212,7 @@ pub fn circular_tuple_windows<I, T>(iter: I) -> CircularTupleWindows<I, T>
     let iter = tuple_windows(iter.cycle()).take(len);
 
     CircularTupleWindows {
-        iter: iter,
+        iter,
         phantom_data: PhantomData{}
     }
 }