Fix incorrect output on disconnect for cli mode

The '.' command would fail to exit the function, causing the 'help' output to occur.
Fix this by having the '.' command processed in the same manner as the rest.

TODO

@@ -48,6 +48,5 @@ Traceback (most recent call last):
   File "/usr/bin/confetty", line 211, in print_result
     for key in res.iterkeys():
 AttributeError: 'str' object has no attribute 'iterkeys'
-[root@odin ~]# confetty
-/ -> cd /nodes/n3
--try to get 'health' without trailing /
+-/detected/ collection
+  -SLP snooping: snoop for srvrequests, likel

confluent_client/bin/confetty

@@ -456,7 +456,7 @@ def conserver_command(filehandle, command):
     if command[0] == '.':
         print("disconnect]\r")
         quitconfetty(fullexit=consoleonly)
-    if command[0] == 'b':
+    elif command[0] == 'b':
         tlvdata.send(session.connection, {'operation': 'break',
                                           'path': currconsole})
         print("break sent]\r")