avoid auto's in the lambdas in OSS build
avoid auto's in the lambdas in OSS build

Summary: no

Reviewed By: pietern

Differential Revision: D6521515

fbshipit-source-id: 74049ad63fcf2e854ebeeac150c2ba2017904b7a

xzturn/caffe2,Yangqing/caffe2,xzturn/caffe2,Yangqing/caffe2,Yangqing/caffe2,xzturn/caffe2,caffe2/caffe2,Yangqing/caffe2,xzturn/caffe2,Yangqing/caffe2,xzturn/caffe2