Print Exif, Icc available in decode example

As we do not handle them internally it is also useful to get this
information when checking bugs, as these could be indicators for a
buggy color pipeline.

Author: 197g

examples/decode.rs

@@ -21,6 +21,10 @@ fn main() {
     let mut data = decoder.decode().expect("Decoding failed. If other software can successfully decode the specified JPEG image, then it's likely that there is a bug in jpeg-decoder");
     let info = decoder.info().unwrap();
 
+    eprintln!("{:?}", info);
+    eprintln!("Exif: {}", decoder.exif_data().is_some());
+    eprintln!("ICC: {}", decoder.icc_profile().is_some());
+
     let output_file = File::create(output_path).unwrap();
     let mut encoder = png::Encoder::new(output_file, info.width as u32, info.height as u32);