Added missing recalculate of normals after mesh import

source/blender/collada/MeshImporter.cpp

@@ -1033,7 +1033,11 @@ Object *MeshImporter::create_mesh_object(COLLADAFW::Node *node, COLLADAFW::Insta
 	Mesh *new_mesh = uid_mesh_map[*geom_uid];
 
 	BKE_mesh_assign_object(ob, new_mesh);
-	
+    BKE_mesh_calc_normals_mapping(new_mesh->mvert, new_mesh->totvert, 
+								  new_mesh->mloop, new_mesh->mpoly,
+								  new_mesh->totloop, new_mesh->totpoly,
+								  NULL, NULL, 0, NULL, NULL);
+
 	if (old_mesh->id.us == 0) BKE_libblock_free(&G.main->mesh, old_mesh);
 	
 	char layername[100];