Call Pin::map_unchecked_mut as method

Author: taiki-e

futures-core/src/future/future_obj.rs

@@ -126,7 +126,7 @@ impl<T> Future for FutureObj<'_, T> {
     #[inline]
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T> {
         let pinned_field: Pin<&mut LocalFutureObj<'_, T>> = unsafe {
-            Pin::map_unchecked_mut(self, |x| &mut x.0)
+            self.map_unchecked_mut(|x| &mut x.0)
         };
         LocalFutureObj::poll(pinned_field, cx)
     }

futures-core/src/stream/mod.rs

@@ -167,7 +167,7 @@ mod if_alloc {
             self: Pin<&mut Self>,
             cx: &mut Context<'_>,
         ) -> Poll<Option<S::Item>> {
-            unsafe { Pin::map_unchecked_mut(self, |x| &mut x.0) }.poll_next(cx)
+            unsafe { self.map_unchecked_mut(|x| &mut x.0) }.poll_next(cx)
         }
     }