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

TouchZZZ

2025-05-22 eccf74684743593950ad259877db7ce9ffc06e93

 funasr/models/branchformer/model.py

@@ -3,6 +3,7 @@
from funasr.models.transformer.model import Transformer
from funasr.register import tables


@tables.register("model_classes", "Branchformer")
class Branchformer(Transformer):
    """CTC-attention hybrid Encoder-Decoder model"""