Blender Git Commit Log

Fix T50141: Nabla zero division on texture force field

This sets forces to zero, when Nabla is zero and a grayscale texture is
used or texture mode is Gradient or Curl.

Nabla equal to zero was causing a zero division, and forces ended up
being set to `nan`.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D2393