code: function (progressFn, m) {
    var idx = m.p.indexOf(WO);
    if (idx >= 0) {
      // set scores manually to avoid the `_verify` walkover scoring restriction
      m.m = (idx === 0) ? [0, 1] : [1, 0];
      progressFn(m);
    }
  }
docs: helper to initially score matches with walkovers correctly