Section 109. Petitioner to be released from imprisonment

If, at the time
  the discharge is granted, the petitioner is imprisoned, by virtue of  an
  execution  against  his person issued, or of an order of arrest made, in
  an action or special proceeding  founded  upon  a  debt,  liability,  or
  judgment,  as  to  which  he is exempted from arrest or imprisonment, as
  prescribed in the last section  but  one,  the  officer  must  forthwith
  release  him, on production of the discharge, or a certified copy of the
  record thereof.