Use `bool` for PADDLE_ENFORCE, not int
Use `bool` for PADDLE_ENFORCE, not int

* If stat is an integer, bool value will implicit cast to int before
  pass to PADDLE_ENFORCE

PaddlePaddle/Paddle,baidu/Paddle,QiJune/Paddle,QiJune/Paddle,jacquesqiao/Paddle,pengli09/Paddle,luotao1/Paddle,lcy-seso/Paddle,jacquesqiao/Paddle,chengduoZH/Paddle,reyoung/Paddle,chengduoZH/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,tensor-tang/Paddle,baidu/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,pengli09/Paddle,putcn/Paddle,luotao1/Paddle,QiJune/Paddle,pkuyym/Paddle,lcy-seso/Paddle,putcn/Paddle,lcy-seso/Paddle,QiJune/Paddle,Canpio/Paddle,tensor-tang/Paddle,chengduoZH/Paddle,reyoung/Paddle,pengli09/Paddle,reyoung/Paddle,pengli09/Paddle,pkuyym/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,chengduoZH/Paddle,baidu/Paddle,pkuyym/Paddle,reyoung/Paddle,tensor-tang/Paddle,tensor-tang/Paddle,lcy-seso/Paddle,QiJune/Paddle,Canpio/Paddle,luotao1/Paddle,pengli09/Paddle,Canpio/Paddle,QiJune/Paddle,tensor-tang/Paddle,Canpio/Paddle,reyoung/Paddle,lcy-seso/Paddle,pkuyym/Paddle,baidu/Paddle,putcn/Paddle,putcn/Paddle,Canpio/Paddle,Canpio/Paddle,PaddlePaddle/Paddle,pengli09/Paddle,pkuyym/Paddle,putcn/Paddle,baidu/Paddle,luotao1/Paddle,reyoung/Paddle,pkuyym/Paddle,lcy-seso/Paddle,Canpio/Paddle,jacquesqiao/Paddle,jacquesqiao/Paddle,luotao1/Paddle,jacquesqiao/Paddle,chengduoZH/Paddle,putcn/Paddle