Fix T37790: OSL not rendering subsurface scattering color correct since upgrade to 1.4.
Fix T37790: OSL not rendering subsurface scattering color correct since upgrade to 1.4.

tangent-opensource/coreBlackbird,pyrochlore/cycles,tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird,pyrochlore/cycles,pyrochlore/cycles