Fix warnings in chunk_test
Fix warnings in chunk_test

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