message: Fix PPM encoder ownership comment
diff: @@ -19,7 +19,6 @@ pub struct PPMEncoder<'a, W: 'a> {
  impl<'a, W: Write> PPMEncoder<'a, W> {
  /// Create a new PPMEncoder from the Writer ```w```.
  - /// This function takes ownership of the Writer.
  pub fn new(w: &mut W) -> PPMEncoder<W> {
  PPMEncoder { w: w }
  }
  