Blender Git Loki

Fix T58953: Lamp data not always set

The Lamp data was not always set. When using CUDA or CPU it was, but when using OpenCL
without `OBJECT_MOTION` `sd->lamp` not updated to the actual lamp. This made the
TextureCoordinate output the wrong normal when used in a light shader.

As the normal was incorrect it made the IES node render incorrectly.
(what is the default for the IES node).

By setting the lamp data when no `__OBJECT_MOTION__` compile directive is present makes
sure that the normal is correctly calculated.

Fix D4450

Reviewed By: Brecht van Lommel