change method locals to type object too (same as args)

lib/typed/compiler/field_def.rb

@@ -7,7 +7,7 @@ module Typed
 
       reset_regs # field_def is a statement, no return and all regs
       name_s = no_space( statement.name.value )
-      @method.ensure_local( name_s, statement.type ) unless( @method.has_arg(name_s))
+      @method.add_local( name_s, statement.type ) unless( @method.has_arg(name_s))
       # if there is a value assigned, process it as am assignemnt statement (kind of call on_assign)
       process( Tree::Assignment.new(statement.name , statement.value )  ) if statement.value
       return nil

lib/typed/compiler/name_expression.rb

@@ -28,7 +28,7 @@ module Typed
         raise "must define variable '#{statement.name}' before using it" unless index
         frame = use_reg :Frame
         add_code Register.get_slot(statement , :message , :frame , frame )
-        ret = use_reg @method.locals[index].value_type
+        ret = use_reg @method.locals_type( index )
         add_code Register.get_slot(statement , frame , Parfait::Frame.get_indexed(index), ret )
         return ret
       end