chore(clippy): fix unnecessary conversion

src/main.rs

@@ -74,11 +74,10 @@ fn main() -> Result<()> {
             let actual_directories = get_directories(&base_directory, relative)?;
             let mut missing_directories = actual_directories
                 .difference(&playlist_directories)
-                .into_iter()
                 .collect::<Vec<_>>();
             missing_directories.sort_unstable();
             for d in missing_directories {
-                println!("{}", d);
+                println!("{d}");
             }
         }
     }