Formatted and fix minor fixes

lib/tres/controller.ex

@@ -1,10 +1,11 @@
 defmodule Tres.Controller do
   def controller_helpers do
     quote do
-      import Tres.SwitchRegistry, only: [
-        send_message: 2,
-        get_current_xid: 1
-      ]
+      import Tres.SwitchRegistry,
+        only: [
+          send_message: 2,
+          get_current_xid: 1
+        ]
 
       use Tres.Messages
       use Tres.MessageHelper

lib/tres/secure_channel.ex

@@ -124,10 +124,12 @@ defmodule Tres.SecureChannel do
 
   defp init_handler(state_data) do
     %State{datapath_id: dpid, aux_id: aux_id} = state_data
+
     case MessageHandlerSup.start_child({dpid, aux_id}) do
       {:ok, pid} ->
         ref = Process.monitor(pid)
         %{state_data | handler_pid: pid, handler_ref: ref}
+
       {:error, reason} ->
         {:stop, reason}
     end
@@ -210,6 +212,7 @@ defmodule Tres.SecureChannel do
       %State{} = new_state_data ->
         start_periodic_idle_check()
         {:keep_state, new_state_data}
+
       {:stop, reason} ->
         close_connection({:handler_down, reason}, state_data)
     end

lib/tres/switch_registry.ex

@@ -27,7 +27,7 @@ defmodule Tres.SwitchRegistry do
   end
 
   def get_current_xid({_dpid, _aux_id} = datapath_id) do
-    [{pid, _}|_] = Registry.lookup(__MODULE__,  datapath_id)
+    [{pid, _} | _] = Registry.lookup(__MODULE__, datapath_id)
     :gen_statem.call(pid, :get_xid, 1000)
   end