Fix: Vertex weight color calculation tried to use NULL pointer when called through DM_update_weight_mcol(). (Introduced in r55062.)

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55178 954f8c5b-7b00-dc11-b283-0030488c597c
Fix [#34561]: Possible smoke crash if smoke flow had lower density than adaptive domain "threshold".

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55179 954f8c5b-7b00-dc11-b283-0030488c597c