regress/mdoc/Rs/empty.out_lint

   1 mandoc: empty.in:3:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
   2 mandoc: empty.in:1:5: BASE: Mdocdate missing: Dd February (OpenBSD)
   3 mandoc: empty.in:9:2: WARNING: empty reference block: Rs
   4 mandoc: empty.in:14:2: WARNING: empty reference block: Rs
   5 mandoc: empty.in: BASE: RCS id missing: (OpenBSD)