fix eager loading

lib/msf/core/payload.rb

@@ -12,7 +12,7 @@ module Msf
 ###
 class Payload < Msf::Module
 
-  require 'rex/payloads'
+  require 'rex/payloads/win32'
 
   # Platform specific includes
   require 'metasploit/framework/compiler/mingw'

lib/rex/payloads.rb

@@ -1,2 +1,4 @@
 # -*- coding: binary -*-
-require 'rex/payloads/win32'
+module Rex::Payloads
+
+end

lib/rex/payloads/meterpreter.rb

@@ -1,4 +1,4 @@
-
+require 'rex/payloads'
 module Rex::Payloads::Meterpreter
 
-end
+end