Update CSV.h
Update CSV.h

Fix build on the clang CI.
leemichaelRazer/OSVR-Core,OSVR/OSVR-Core,leemichaelRazer/OSVR-Core,leemichaelRazer/OSVR-Core,leemichaelRazer/OSVR-Core,OSVR/OSVR-Core,godbyk/OSVR-Core,godbyk/OSVR-Core,OSVR/OSVR-Core,godbyk/OSVR-Core,godbyk/OSVR-Core,OSVR/OSVR-Core,OSVR/OSVR-Core,OSVR/OSVR-Core,leemichaelRazer/OSVR-Core,godbyk/OSVR-Core,godbyk/OSVR-Core