fix bug for blank audio (#1656)

jianganghan

2024-04-25 f8b4924060bb849680925e81ddf1e10ca406c225

fix bug for blank audio (#1656)

 funasr/auto/auto_model.py

@@ -513,7 +513,7 @@
                distribute_spk(sentence_list, sv_output)
                result["sentence_info"] = sentence_list
            elif kwargs.get("sentence_timestamp", False):
                if not len(result["text"]):
                if not len(result["text"].strip()):
                    sentence_list = []
                else:
                    sentence_list = timestamp_sentence(