bug fix for asr_launch empty speech (#709)

Xian Shi

2023-07-04 11daec8222410848c2302f11f664911bf8280374

 funasr/bin/train.py

@@ -301,7 +301,7 @@
        "--freeze_param",
        type=str,
        default=[],
        nargs="*",
        action="append",
        help="Freeze parameters",
    )