Don't call TCPIPCloseTCP before calling TCPIPAbortTCP.

This isn't really necessary, and it sometimes seems to put Marinetti in a state where subsequent connections fail.

tcpconnection.c

@@ -61,7 +61,6 @@ Word StartTCPConnection(Session *sess) {
 
 void EndTCPConnection(Session *sess) {
     if (sess->tcpLoggedIn) {
-        TCPIPCloseTCP(sess->ipid);
         TCPIPPoll();
         TCPIPAbortTCP(sess->ipid);
         TCPIPLogout(sess->ipid);