message: minor fix to gossiper tests
diff: @@ -537,7 +537,7 @@ mod tests {
  // Finish the gossip by reporting three infections, then check same partial data causes
  // `Noop` to be returned and holders cleared.
  let _ = gossip_table.new_complete_data(&data_id, Some(node_ids[0]));
  - let limit = 4 + EXPECTED_DEFAULT_INFECTION_TARGET;
  + let limit = 3 + EXPECTED_DEFAULT_INFECTION_TARGET;
  for node_id in &node_ids[3..limit] {
  let _ = gossip_table.we_infected(&data_id, *node_id);
  }
  @@ -616,7 +616,7 @@ mod tests {
  // Finish the gossip by reporting enough non-infections, then check same complete data
  // causes `Noop` to be returned and holders cleared.
  - let limit = 4 + EXPECTED_DEFAULT_INFECTION_TARGET;
  + let limit = 3 + EXPECTED_DEFAULT_INFECTION_TARGET;
  for node_id in &node_ids[3..limit] {
  let _ = gossip_table.we_infected(&data_id, *node_id);
  }
  