message: Align "n" argument with nats.go bench
diff: @@ -26,7 +26,7 @@ struct Args {
  /// Number of Messages to Publish (default 100000)
  #[structopt(long, short, default_value = "100000")]
  - messages: NonZeroUsize,
  + number_of_messages: NonZeroUsize,
  /// Number of Concurrent Publishers (default 1)
  #[structopt(short, long, default_value = "1")]
  @@ -56,11 +56,11 @@ fn main() -> std::io::Result<()> {
  opts.connect(&args.url)?
  };
  - let messages = if args.messages.get() % args.publishers.get() != 0 {
  - let bumped_idx = (args.messages.get() / args.publishers.get()) + 1;
  + let messages = if args.number_of_messages.get() % args.publishers.get() != 0 {
  + let bumped_idx = (args.number_of_messages.get() / args.publishers.get()) + 1;
  bumped_idx * args.publishers.get()
  } else {
  - args.messages.get()
  + args.number_of_messages.get()
  };
  let message_size = args.message_size;
  