fix badcase for empty files

雾聪

2023-06-25 57558b4a7df571dd74dc1e23b694a23bb63249f4

1
2
3
4
5
6
beam_size: 5
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7