Add a check for .rb in cmd_edit

Author: wvu

lib/msf/ui/console/command_dispatcher/modules.rb

@@ -95,9 +95,11 @@ def cmd_edit(*args)
               system(editor, path)
 
               # XXX: This will try to reload *anything* and break on modules
-              if args.length > 0
+              if args.length > 0 && path.end_with?('.rb')
                 print_status("Reloading #{path}")
                 load path
+              else
+                print_error('Only Ruby files can be reloaded')
               end
             else
               print_error('Nothing to edit -- try using a module first.')