map lcms error

ext/canvas/image_ops.rs

@@ -365,14 +365,12 @@ where
     &output_icc_profile,
     pixel_format,
     output_icc_profile.header_rendering_intent(),
-  );
+  )
+  .map_err(CanvasError::Lcms)
+  .unwrap();
 
   for (x, y, mut pixel) in image.pixels() {
-    let pixel = match transformer {
-      Ok(ref transformer) => pixel.transform_color_profile(transformer),
-      // This arm will reach when the ffi call fails.
-      Err(_) => pixel,
-    };
+    let pixel = pixel.transform_color_profile(&transformer);
 
     out.put_pixel(x, y, pixel);
   }

ext/canvas/lib.rs

@@ -22,6 +22,8 @@ pub enum CanvasError {
   #[error("Cannot decode image '{0}'")]
   InvalidImage(String),
   #[error(transparent)]
+  Lcms(#[from] lcms2::Error),
+  #[error(transparent)]
   /// This error will be mapped to TypeError.
   Image(#[from] image::ImageError),
 }

runtime/errors.rs

@@ -603,6 +603,7 @@ fn get_canvas_error(e: &CanvasError) -> &'static str {
   match e {
     CanvasError::UnsupportedColorType(_) => "TypeError",
     CanvasError::InvalidImage(_) => "DOMExceptionInvalidStateError",
+    CanvasError::Lcms(_) => "TypeError",
     CanvasError::Image(_) => "TypeError",
   }
 }