Apply clippy suggestions from Rust 1.78

quinn/src/recv_stream.rs

@@ -476,7 +476,7 @@ impl futures_io::AsyncRead for RecvStream {
         buf: &mut [u8],
     ) -> Poll<io::Result<usize>> {
         let mut buf = ReadBuf::new(buf);
-        ready!(RecvStream::poll_read_buf(self.get_mut(), cx, &mut buf))?;
+        ready!(Self::poll_read_buf(self.get_mut(), cx, &mut buf))?;
         Poll::Ready(Ok(buf.filled().len()))
     }
 }

quinn/src/runtime.rs

@@ -157,6 +157,7 @@ impl<MakeFut, Fut> Debug for UdpPollHelper<MakeFut, Fut> {
 /// then `TokioRuntime` is returned. Otherwise, if `runtime-async-std` is enabled, `AsyncStdRuntime`
 /// is returned. Otherwise, if `runtime-smol` is enabled, `SmolRuntime` is returned.
 /// Otherwise, `None` is returned.
+#[allow(clippy::needless_return)] // Be sure we return the right thing
 pub fn default_runtime() -> Option<Arc<dyn Runtime>> {
     #[cfg(feature = "runtime-tokio")]
     {

quinn/src/send_stream.rs

@@ -265,7 +265,7 @@ impl SendStream {
 #[cfg(feature = "futures-io")]
 impl futures_io::AsyncWrite for SendStream {
     fn poll_write(self: Pin<&mut Self>, cx: &mut Context, buf: &[u8]) -> Poll<io::Result<usize>> {
-        SendStream::execute_poll(self.get_mut(), cx, |stream| stream.write(buf)).map_err(Into::into)
+        Self::execute_poll(self.get_mut(), cx, |stream| stream.write(buf)).map_err(Into::into)
     }
 
     fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context) -> Poll<io::Result<()>> {