Fix WinRT compilation issue in ShaderD3D.cpp
Fix WinRT compilation issue in ShaderD3D.cpp

mybios/angle,MSOpenTech/angle,mybios/angle,MSOpenTech/angle,MSOpenTech/angle,mlfarrell/angle,MSOpenTech/angle,mlfarrell/angle,mlfarrell/angle,mlfarrell/angle,mybios/angle,mybios/angle