get block resolution to use the extra

block_compiler puts in the extra, that we get out when resolving the type
Thus block args work, though only by assuming direct call

test/mom/test_block_statement.rb

@@ -39,7 +39,7 @@ module Vool
       assert_equal 1, @block.frame_type.variable_index(:local)
     end
   end
-  class TestBlockMethod #< MiniTest::Test
+  class TestBlockMethod < MiniTest::Test
     include MomCompile
     def setup
       Parfait.boot!