fix bug: msg.c_str

lyblsgo

2023-04-11 dc8a0445d5460af16e9926a492a85da592f224bb

 egs_modelscope/asr/mfcca/speech_mfcca_asr-zh-cn-16k-alimeeting-vocab4950/infer.py

@@ -19,7 +19,7 @@
    inference_pipline = pipeline(
        task=Tasks.auto_speech_recognition,
       model='NPU-ASLP/speech_mfcca_asr-zh-cn-16k-alimeeting-vocab4950',
        model_revision='v1.0.0',
        model_revision='v3.0.0',
        output_dir=output_dir_job,
        batch_size=1,
    )