Fixes review issues

Author: montekki

src/stream/stream/fold.rs

@@ -31,23 +31,23 @@ impl<S, F, T, B> FoldFuture<S, F, T, B> {
 
 impl<S, F, B> Future for FoldFuture<S, F, S::Item, B>
 where
- S: Stream + Unpin + Sized,
+ S: Stream + Sized,
  F: FnMut(B, S::Item) -> B,
 {
  type Output = B;
 
  fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
- let next = futures_core::ready!(self.as_mut().stream().poll_next(cx));
+ loop {
+ let next = futures_core::ready!(self.as_mut().stream().poll_next(cx));
 
- match next {
- Some(v) => {
- cx.waker().wake_by_ref();
- let old = self.as_mut().acc().take().unwrap();
- let new = (self.as_mut().f())(old, v);
- *self.as_mut().acc() = Some(new);
- Poll::Pending
+  match next {
+  Some(v) => {
+  let old = self.as_mut().acc().take().unwrap();
+  let new = (self.as_mut().f())(old, v);
+  *self.as_mut().acc() = Some(new);
+ }
+ None => return Poll::Ready(self.as_mut().acc().take().unwrap()),
  }
- None => Poll::Ready(self.as_mut().acc().take().unwrap()),
  }
  }
 }