fixed cuda warnings
fixed cuda warnings

yvan-sraka/cutorch,Moodstocks/cutorch,Schakirov/cutorch_my,0wu/cutorch,Schakirov/cutorch_my,LinusU/cutorch,luketwitter/cutorch,soumith/cutorch,LinusU/cutorch,Zhen-hao/cutorch,adamlerer/cutorch,Moodstocks/cutorch,yvan-sraka/cutorch,wickedfoo/cutorch,torch/cutorch,wickedfoo/cutorch,hughperkins/cutorch,Zhen-hao/cutorch,adamlerer/cutorch,hughperkins/cutorch,torch/cutorch,torch/cutorch,luketwitter/cutorch,0wu/cutorch,clementfarabet/cutorch,fmassa/cutorch,clementfarabet/cutorch