fix an issue where instruction was in wrong code

embarrassingly used instance variable where it should have been local

test/support/risc_interpreter.rb

@@ -8,17 +8,12 @@ module Risc
 
     def setup
       Risc.machine.boot
-      do_clean_compile
       Vool::VoolCompiler.ruby_to_binary( @string_input , :interpreter)
       @interpreter = Interpreter.new
       @interpreter.start_machine
     end
     alias :do_setup :setup
 
-    # must be after boot, but before main compile, to define method
-    def do_clean_compile
-    end
-
     # check the given array of instructions is what the interpreter actually does
     # possible second argument ignores the given amount, usually up until main
     def check_chain( should , start_at = 0 )