Remove needless scope

src/config.rs

@@ -540,13 +540,11 @@ trait Updateable<'de>: Serialize + Deserialize<'de> {
     fn update_value<S: Serialize>(&mut self, key: &str, value: S) {
         let mut raw = Value::try_from(&self).expect("unreachable");
 
-        {
         if let Ok(value) = Value::try_from(value) {
             let _ = raw.insert(key, value);
         } else {
             return;
         }
-        }
 
         if let Ok(updated) = raw.try_into() {
             *self = updated;