Fix Win32 build
Fix Win32 build

[ ] May break build
[ ] May break existing applications (see CHANGES.txt)
[x] Bugfix
[ ] New Feature
[ ] Cleanup
[ ] Optimization
[ ] Documentation

hernando/vmmlib,biddisco/CMake,shurikasa/CMake,BlueBrain/Tuvok,biddisco/CMake,jafyvilla/CMake,hernando/vmmlib,biddisco/CMake,BlueBrain/Tuvok,jafyvilla/CMake,shuaibarshad/KAUST-CMake,shurikasa/CMake,shurikasa/CMake,rballester/vmmlib,hernando/vmmlib,shuaibarshad/KAUST-CMake,rballester/vmmlib,jafyvilla/CMake,ptoharia/CMake,tribal-tec/vmmlib,ptoharia/CMake,biddisco/CMake,BlueBrain/Tuvok,shuaibarshad/KAUST-CMake,ptoharia/CMake,shurikasa/CMake,jafyvilla/CMake,rballester/vmmlib,ptoharia/CMake,shuaibarshad/KAUST-CMake