regress/mdoc/Bl/emptyhead.out_lint

   1 mandoc: emptyhead.in:12:2: WARNING: empty head in list item: Bl -hang It
   2 mandoc: emptyhead.in:21:2: WARNING: empty head in list item: Bl -ohang It
   3 mandoc: emptyhead.in:30:2: WARNING: empty head in list item: Bl -inset It
   4 mandoc: emptyhead.in:39:2: WARNING: empty head in list item: Bl -diag It