perf: unwrap the size once

src/output.rs

@@ -152,7 +152,8 @@ pub fn print(duplicates: DashMap<String, Vec<File>>, opts: &Params) {
             let size =
                 f.1.first()
                     .and_then(|ff| fs::metadata(&ff.path).ok())
-                    .and_then(|m| Some(m.len()));
+                    .and_then(|m| Some(m.len()))
+                    .unwrap_or_default();
             (f.0, f.1, size)
         })
         .sorted_unstable_by_key(|f| f.2) // sort by ascending size
@@ -164,7 +165,7 @@ pub fn print(duplicates: DashMap<String, Vec<File>>, opts: &Params) {
                     format_path(&file.path, opts).unwrap_or_default().blue(),
                     // since all files should logically have the same size,
                     // we can print the pre-computed size of the first element in the group
-                    format!("{:>12}", format_size(size.unwrap_or_default(), DECIMAL)).red(),
+                    format!("{:>12}", format_size(size, DECIMAL)).red(),
                     modified_time(&file.path).unwrap_or_default().yellow()
                 ]);
             });