remove compiler warning (VS2017.6)
remove compiler warning (VS2017.6)

johnd0e/FarManager,johnd0e/FarManager,FarGroup/FarManager,FarGroup/FarManager,johnd0e/FarManager,johnd0e/FarManager,FarGroup/FarManager,johnd0e/FarManager,FarGroup/FarManager,johnd0e/FarManager,FarGroup/FarManager,FarGroup/FarManager,FarGroup/FarManager,FarGroup/FarManager,johnd0e/FarManager,johnd0e/FarManager