add empty line after guard clause to MessagesController

git-svn-id: http://svn.redmine.org/redmine/trunk@20263 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/messages_controller.rb

@@ -138,6 +138,7 @@ class MessagesController < ApplicationController
 
   def find_message
     return unless find_board
+
     @message = @board.messages.includes(:parent).find(params[:id])
     @topic = @message.root
   rescue ActiveRecord::RecordNotFound