Migrate to parking_lot

src/lang.rs

@@ -18,7 +18,8 @@ use std::collections::HashMap;
 use std::fmt::{Display, Formatter};
 use std::num::ParseIntError;
 use std::str::FromStr;
-use std::sync::{Arc, Mutex};
+use std::sync::Arc;
+use parking_lot::Mutex;
 use std::time::Instant;
 
 const MAX_HISTORY_LEN: usize = 20;
@@ -354,7 +355,7 @@ pub struct DeckData {
 impl DeckData {
     pub fn new(settings: &DeckSettings, state: Arc<Mutex<AppState>>) -> Self {
         let state_for = state.clone();
-        let state_locked = state.lock().unwrap();
+        let state_locked = state.lock();
 
         let mut current_set = load_stats_of_deck(settings, &state_locked.connection);
         let last_list: Vec<_> = settings
@@ -446,7 +447,7 @@ impl DeckData {
                 self.order_module = OrderModule::WorstWordsSRS(module);
             }
         }
-        update_stat_score(word, &self.state.lock().unwrap().connection);
+        update_stat_score(word, &self.state.lock().connection);
         push_note(
             self.settings.id,
             HistoryItem {