An extra newline is unexpectedly inserted after a dslx-fmt::on comment

[dplassgit]

Format:

import thing1;
import thing2;

fn f() -> (u32, u16) {
    let y = u16:64;

    // dslx-fmt::off
let y = u16:64;
let x = 
  u32:41;
         (x ,   y)

          // dslx-fmt::on

}

inserts the extra newline after the ::on.