auto add a LF before a command

I use TelnetClient to connect to my H3C router. When I type the first command, it's ok. When I type the second command, TelnetClient automatically add a LF character before my second command, i.e. send an empty command before my second command.

I review the source code of TelnetOutputStream.java, in function write(int ch). When I type the first character of my second command, variable _lastWasCR is true, variable __convertCRtoCRLF is true, and because I set nothing of TelnetOption.BINARY, _client._requestedWont(TelnetOption.BINARY) also returns true。 lead to cause my issue.