fix for building with opencollada 833 on linux.

source/blender/collada/collada_utils.cpp

@@ -22,6 +22,9 @@
  * ***** END GPL LICENSE BLOCK *****
  */
 
+/* COLLADABU_ASSERT, may be able to remove later */
+#include "COLLADABUPlatform.h"
+
 #include "COLLADAFWGeometry.h"
 #include "COLLADAFWMeshPrimitive.h"
 #include "COLLADAFWMeshVertexData.h"