fix init method message setup

was causing errors in interpreter
(that may have gone unnoticed in arm, as the interpreter checks stuff)

test/mom/assign/test_assign_local_const.rb

@@ -18,9 +18,15 @@ module Risc
       assert_equal 5 , produced.constant.value
     end
 
-    def test_slot_move
+    def test_frame_load
+      produced = produce_body
+      assert_equal :Message , produced.next(1).array.type
+      assert_equal 4 , produced.next(1).index # 4 is frame
+    end
+    def test_value_load
       produced = produce_body
       assert_equal produced.next(2).register , produced.register
+      assert_equal 2 , produced.next(2).index #type == 1 , r == 2
     end
 
   end