fixed while instruciton linking after change in method add

lib/ast/while_expression.rb

@@ -15,7 +15,8 @@ module Ast
         raise part.inspect if last.nil?
       end
       # unconditionally brnach to the start
-      method.add start
+      merge.next = method.current.next
+      method.current.next = start
       # here we add the end of while that the branch jumps to
       #but don't link it in (not using add)
       method.current =  merge

lib/virtual/method_definition.rb

@@ -52,7 +52,7 @@ module Virtual
     def set_var name , var
       v = has_var name
       if( v )
-        puts "resetting local #{v}"
+        puts "resetting local #{v.inspect}"
       else
         v = Local.new(name , var)
         @locals << v