message: dynimage: uncomment the catch-all arm
  When built without all of the features enabled, this arm is required.
diff: @@ -629,7 +629,7 @@ pub fn load<R: BufRead+Seek>(r: R, format: ImageFormat) -> ImageResult<DynamicIm
  image::ImageFormat::HDR => decoder_to_image(try!(hdr::HDRAdapter::new(BufReader::new(r)))),
  #[cfg(feature = "ppm")]
  image::ImageFormat::PPM => decoder_to_image(try!(ppm::PPMDecoder::new(BufReader::new(r)))),
  -// _ => Err(image::ImageError::UnsupportedError(format!("A decoder for {:?} is not available.", format))),
  + _ => Err(image::ImageError::UnsupportedError(format!("A decoder for {:?} is not available.", format))),
  }
  }
  