tokio_util::io::poll_read_buf does not work with ?Sized type.

[fakeshadow]

Is your feature request related to a problem? Please describe.
For given case said api does not work.

fn poll_read(
    io: &mut (dyn tokio::io::AsyncRead + Unpin),
    cx: &mut std::task::Context<'_>,
    buf: &mut impl bytes::BufMut,
) {
    tokio_util::io::poll_read_buf(std::pin::Pin::new(io), cx, buf);
}

Describe the solution you'd like
add ?Sized bound.

Additional context
I recall at some point the function has ?Sized bound but have no idea when or why it's removed.

[Darksonn]

Thanks, adding ?Sized sounds like a good idea.

I recall at some point the function has ?Sized bound but have no idea when or why it's removed.

I'm pretty sure it has always been the way it is now.