#9 Faulty comments within hwut_sm_walker block

[Stephan Hengefeld]

If lines within the definition of a 'hwut_sm_walker' are commented out, the following error message is shown:
Error: no marker found (Expected '<<<<hwut-iterator:: ...="">>' or '<<<<hwut-sm_walker:: ...="">>' or '<<<<hwut-racer:: ..="">>'.</hwut-racer::></hwut-sm_walker::></hwut-iterator::>