refactor: remove extra .into()

src/main.rs

@@ -100,7 +100,7 @@ impl State {
         match message {
             Message::ImagePicked(result) => {
                 match result.and_then(|path| self.load_image(path).map_err(Cow::from)) {
-                    Err(e) => self.error = Some(e.into()),
+                    Err(e) => self.error = Some(e),
                     Ok(task) => {
                         self.error = None;
                         return task;