message: Vector::Normlp: update outdated comment
  Update an outdated comment; my counting was off...
diff: @@ -710,7 +710,7 @@ double Vector::Normlp(double p) const
  // is large and/or data[i] is large in absolute value for some
  // valid value of i. Computing this scaling factor, performing
  // the scaling, and then rescaling the result at the end of the
  - // computation costs n divisions and (n + 1) comparisons, but
  + // computation costs n divisions and (n - 1) comparisons, but
  // ensures that every exponentiated term in the summation has
  // magnitude no greater than one.
  const double inf_norm = Normlinf();
  