Blender Git Commit Log

Fix T48151: Brush texture overlay won't refresh automatically in UV editor when changed in buttons window.

Simple solution is to get rid of this stupid `rna_TextureSlot_brush_update` func, and do what it was doing directly
in BR case of `rna_TextureSlot_update`. That way, all updates to brush texture will invalidate correctly the overlay.

Note that this double definition of texture pointer for brushes looks rather fishy, am really not convinced this helps
keeping things simple and clear at all (what happened here is that texture selector in image paint editor was using
'texture' member of brush itself, which was performing correct RNA update, while context-based brush texture selector
from buttons space was using 'texture' member of the TextureSlot struct, which had default texture update callback
which was not invalidating overlay).