Fix backfill sentiment batching bug

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

src/threads/data/websocket/news.rs

@@ -82,15 +82,16 @@ impl super::Handler for Handler {
 
                 let input = format!("{}\n\n{}", news.headline, news.content);
 
-                let sequence_classifier = self.config.sequence_classifier.lock().await;
                 let prediction = block_in_place(|| {
-                    sequence_classifier
+                    self.config
+                        .sequence_classifier
+                        .lock()
+                        .unwrap()
                         .predict(vec![input.as_str()])
                         .into_iter()
                         .map(|label| Prediction::try_from(label).unwrap())
                         .collect::<Vec<_>>()[0]
                 });
-                drop(sequence_classifier);
 
                 let news = News {
                     sentiment: prediction.sentiment,