fix a deep speech 2 speed bug
fix a deep speech 2 speed bug

PaddlePaddle/models,PaddlePaddle/models,xinghai-sun/models,kuke/models,kuke/models,Superjom/models-1,xinghai-sun/models,xinghai-sun/models,lcy-seso/models,qingqing01/models,Superjom/models-1,xinghai-sun/models,PaddlePaddle/models,kuke/models,qingqing01/models,lcy-seso/models,qingqing01/models,kuke/models,Superjom/models-1,lcy-seso/models