Merge rust-bitcoin/rust-bitcoin#1119: Use `listener.accept()`

b1faf63e82 Use listener.accept() (Tobin C. Harding)

Pull request description:

  During test network simulation we only accept a single connection, we can simplify the code by using `accept`.

  Done as a follow up to review suggestion:

  https://github.com/rust-bitcoin/rust-bitcoin/pull/1042#discussion_r898013799

ACKs for top commit:
  Kixunil:
    ACK b1faf63e82
  apoelstra:
    ACK b1faf63e82

Tree-SHA512: b2ead15d3108db3e01d9faab5e3521403dad6a0f4c3cf505f88fefd020110c520a89b9406484c10b04c9a34073c8abc465941577b17b5a193b54502c23b14c61

src/network/stream_reader.rs

@@ -193,7 +193,7 @@ mod test {
         // in async mode
         let handle = thread::spawn(move || {
             // We only simulate a single connection.
-            let mut ostream = listener.incoming().next().unwrap().unwrap();
+            let (mut ostream, _) = listener.accept().unwrap();
             for piece in pieces {
                 ostream.write_all(&piece[..]).unwrap();
                 ostream.flush().unwrap();