A little further fix on the extra NiNode removal code, now curve-less IPO's or unused multi-materials should be ignored.
A little further fix on the extra NiNode removal code, now curve-less IPO's or unused multi-materials should be ignored.

amorilia/blender_nif_plugin,amorilia/blender_nif_plugin,nightstrike/blender_nif_plugin,nightstrike/blender_nif_plugin