Remove unnecessary mut

src/main.rs

@@ -32,14 +32,14 @@ async fn view_votes(State(state): State<AppState>, Path(slug): Path<String>) ->
         }
     }
 
-    return Json(Page { slug, votes: 0 });
+    Json(Page { slug, votes: 0 })
 }
 
 async fn leaderboard_submit_score(State(state): State<AppState>, Path(slug): Path<String>) {
     tracing::info!("Submitting vote for {slug}");
 
     let mut found = false;
-    for mut page in &mut state.record.lock().unwrap().pages {
+    for page in &mut state.record.lock().unwrap().pages {
         if page.slug == slug {
             page.votes += 1;
             found = true;