Akka error when neo-cli exit

[ProDog]

Describe the bug A exception about akka when neo-cli exit.

To Reproduce

1. Run neo-cli
2. Waitting connect nodes and start synchronizing block
3. Run exit command.

Expected behavior No exception.

Screenshots

Platform:

• OS: Windows 10 x64
• Version: neo3 preview2

(Optional) Additional context Exception content:

[ERROR][2020/4/27 2:23:38][Thread 0027][akka://NeoSystem/system/IO-TCP/$i] Monitored actor [[akka://NeoSystem/user/$b#1433939172]] terminated
Cause: Akka.Actor.DeathPactException: Monitored actor [[akka://NeoSystem/user/$b#1433939172]] terminated
   at Akka.Actor.ActorBase.Unhandled(Object message)
   at Akka.Actor.ActorBase.AroundReceive(Receive receive, Object message)
   at Akka.Actor.ActorCell.ReceiveMessage(Object message)
   at Akka.Actor.ActorCell.ReceivedTerminated(Terminated t)
   at Akka.Actor.ActorCell.AutoReceiveMessage(Envelope envelope)
   at Akka.Actor.ActorCell.Invoke(Envelope envelope)

[erikzhang]

@ProDog Has it been fixed?