refactor: address review — sort_by_key and optional comment timestamps

crates/providers/hitta/src/parser.rs

@@ -42,7 +42,7 @@ struct Statistics {
 #[derive(Debug, Deserialize)]
 struct RawComment {
     comment: String,
-    timestamp: u64,
+    timestamp: Option<u64>,
 }
 
 pub fn request_urls(number: &str) -> Vec<String> {
@@ -96,13 +96,13 @@ pub fn parse(body: &str) -> Result<ParsedEntry, ParseError> {
             .into_iter()
             .filter(|raw| !raw.comment.trim().is_empty())
             .map(|raw| ParsedComment {
-                timestamp: Some((raw.timestamp / 1000) as i64),
+                timestamp: raw.timestamp.map(|millis| (millis / 1000) as i64),
                 title: None,
                 message: raw.comment,
             })
             .collect();
 
-        comments.sort_by(|a, b| b.timestamp.cmp(&a.timestamp));
+        comments.sort_by_key(|comment| std::cmp::Reverse(comment.timestamp));
 
         return Ok(ParsedEntry {
             messages: Vec::new(),