macro-stepper: fix relative require bug (set current-directory)   related to PR 12486
macro-stepper: fix relative require bug (set current-directory)
  related to PR 12486

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket