fix local name being string (not symbol)

lib/risc/collector.rb

@@ -39,7 +39,7 @@ module Risc
       #puts message(objekt , depth)
       #puts "ADD #{objekt.inspect}, #{objekt.name}" if objekt.is_a? Parfait::TypedMethod
       unless objekt.is_a?( Parfait::Object) or objekt.is_a?( Symbol) or objekt.is_a?( Risc::Label)
-        raise "adding non parfait #{objekt.class}"
+        raise "adding non parfait #{objekt.class}:#{objekt}"
       end
       #raise "Method #{objekt.name}" if objekt.is_a? Parfait::TypedMethod
       @objects[objekt.object_id] = objekt

lib/vool/statements/normalizer.rb

@@ -14,7 +14,7 @@ module Vool
       end
       return [condition] if condition.is_a?(Named) or condition.is_a?(Constant)
       condition = condition.normalize
-      local = "tmp_#{object_id}"
+      local = "tmp_#{object_id}".to_sym
       assign = Statements.new [LocalAssignment.new( local , condition)]
       [LocalVariable.new(local) , assign]
     end