fix: msg_stamp.size() is unsigned,should convert to int (#2523)

TouchZZZ

2025-05-22 eccf74684743593950ad259877db7ce9ffc06e93

 funasr/models/specaug/time_warp.py

@@ -1,4 +1,5 @@
"""Time warp module."""

import torch

from funasr.models.transformer.utils.nets_utils import pad_list