Fix:lock unwrap cause panic

If streams cannot be locked, it will cause a panic

Signed-off-by: jokemanfire <hu.dingyang@zte.com.cn>

Author: jokemanfire

src/asynchronous/client.rs

@@ -74,8 +74,10 @@ impl Client {
 
         let (tx, mut rx): (ResultSender, ResultReceiver) = mpsc::channel(100);
 
-        // TODO: check return.
-        self.streams.lock().unwrap().insert(stream_id, tx);
+        self.streams
+            .lock()
+            .map_err(|_| Error::Others("Failed to acquire lock on streams".to_string()))?
+            .insert(stream_id, tx);
 
         self.req_tx
             .send(msg)
@@ -136,8 +138,11 @@ impl Client {
         }
 
         let (tx, rx): (ResultSender, ResultReceiver) = mpsc::channel(100);
-        // TODO: check return
-        self.streams.lock().unwrap().insert(stream_id, tx);
+        self.streams
+            .lock()
+            .map_err(|_| Error::Others("Failed to acquire lock on streams".to_string()))?
+            .insert(stream_id, tx);
+
         self.req_tx
             .send(msg)
             .await