message: Fix time of poll timeout in node simulator.
diff: @@ -789,7 +789,7 @@ mod tests {
  use std::thread;
  use super::*;
  - pub static POLL_TIMEOUT: u64 = 1000; /* in ms */
  + pub static POLL_TIMEOUT: i64 = 1000; /* in ms */
  pub fn start() -> (GenTransaction, thread::JoinHandle<Vec<String>>) {
  let (pk, sk) = sodiumoxide::crypto::sign::ed25519::gen_keypair();
  