Fix review nits

Author: montekki

src/stream/repeat_with.rs

@@ -57,7 +57,11 @@ pub struct RepeatWith<F, Fut, A> {
 /// assert_eq!(s.next().await, None);
 /// # }) }
 /// ```
-pub fn repeat_with<F, Fut, A>(repeater: F) -> RepeatWith<F, Fut, A> {
+pub fn repeat_with<F, Fut, A>(repeater: F) -> RepeatWith<F, Fut, A>
+where
+ F: FnMut() -> Fut,
+ Fut: Future<Output = A>,
+{
  RepeatWith {
  f: repeater,
  future: None,
@@ -79,16 +83,16 @@ where
 
  fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
  loop {
- match self.future.is_some() {
- true => {
+ match &self.future {
+ Some(_) => {
  let res =
  futures_core::ready!(self.as_mut().future().as_pin_mut().unwrap().poll(cx));
 
  self.as_mut().future().set(None);
 
  return Poll::Ready(Some(res));
  }
- false => {
+ None => {
  let fut = (self.as_mut().f())();
 
  self.as_mut().future().set(Some(fut));