small fix for MSVC
small fix for MSVC

LinusU/cutorch,yvan-sraka/cutorch,torch/cutorch,Moodstocks/cutorch,0wu/cutorch,wickedfoo/cutorch,wickedfoo/cutorch,clementfarabet/cutorch,Schakirov/cutorch_my,adamlerer/cutorch,Moodstocks/cutorch,clementfarabet/cutorch,Schakirov/cutorch_my,luketwitter/cutorch,torch/cutorch,torch/cutorch,0wu/cutorch,luketwitter/cutorch,adamlerer/cutorch,yvan-sraka/cutorch,LinusU/cutorch