fix counter bug

src/bin/main.rs

@@ -24,11 +24,6 @@ fn main() {
             let counter = Arc::clone(&counter);
 
             tasks.run(move || {
-		{
-		    // in a subscope to release borrow automatically
-		    let mut count = counter.lock().unwrap();
-		    *count += 1;
-		}
                 handle_connection(counter, stream);
             });
         }
@@ -44,7 +39,8 @@ fn handle_connection(counter: Arc<Mutex<usize>>, mut stream: TcpStream) {
 
     {
         // in a subscope to unlock automatically
-        let count = counter.lock().unwrap();
+        let mut count = counter.lock().unwrap();
+        *count += 1;
         println!("Request: {}\n{}", count, String::from_utf8_lossy(&buffer[..]));
     }