fix NoneType bug for ws_client.py microphone mode

zhaomingwork

2023-05-13 3dcaa9df2f056fefd87736f1cd1cd32679018ba9

 funasr/tasks/asr.py

@@ -1684,7 +1684,7 @@

        # 7. Build model

        if encoder.unified_model_training:
        if hasattr(encoder, 'unified_model_training') and encoder.unified_model_training:
            model = UnifiedTransducerModel(
                vocab_size=vocab_size,
                token_list=token_list,