fix possible memory leak of funasr-wss-client (#1913)

Johntheprime

2024-07-16 685550515ed823d92226c873ab3811037f1aad5b

 funasr/models/rwkv_bat/rwkv.py

@@ -76,6 +76,7 @@
        x = x + self.dropout_ffn(ffn)
        return x, state


class RWKVDecoderLayer(torch.nn.Module):
    """RWKV module.