code cleanup:
- incorrect NULL check in logic UI drawing
- incorrect NULL check in octree quad test


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@58826 954f8c5b-7b00-dc11-b283-0030488c597c
correct error in own recent edits to triangle joining


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@58827 954f8c5b-7b00-dc11-b283-0030488c597c
fix(Collada): wrong usage of the set attribute with multiple UV sets

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@58829 954f8c5b-7b00-dc11-b283-0030488c597c
Fix [#35541]: Point cache doesn't load existing frames from disk if cache file name is changed.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@58830 954f8c5b-7b00-dc11-b283-0030488c597c