message: Fix the asserts to compensate for ACKs
diff: @@ -1476,9 +1476,10 @@ mod tests {
  qdebug!("---- server");
  let res = server.process(res, now());
  - assert!(res.is_empty());
  + assert_eq!(res.len(), 1);
  assert_eq!(*server.state(), State::Connected);
  qdebug!("Output={:0x?}", res);
  + // ACKs
  // -->> nothing
  qdebug!("---- client");
  @@ -1502,7 +1503,7 @@ mod tests {
  qdebug!("---- server");
  let res = server.process(res, now());
  - assert!(res.is_empty());
  + assert_eq!(res.len(), 1);
  assert_eq!(*server.state(), State::Connected);
  qdebug!("Output={:0x?}", res);
  