fixed struct test

Author: Roberto De Ioris

tests/test_structs.py

@@ -40,11 +40,11 @@ def test_cmp(self):
 
     def test_ptr(self):
         source_model = StaticMeshSourceModel()
-        source_model().BuildSettings().bRecomputeNormals=False
-        source_model().BuildSettings().bRecomputeTangents=True
-        source_model().BuildSettings().bUseMikkTSpace=True
-        source_model().BuildSettings().bBuildAdjacencyBuffer=True
-        source_model().BuildSettings().bRemoveDegenerates=True
+        source_model.ref().BuildSettings.ref().bRecomputeNormals=False
+        source_model.ref().BuildSettings.ref().bRecomputeTangents=True
+        source_model.ref().BuildSettings.ref().bUseMikkTSpace=True
+        source_model.ref().BuildSettings.ref().bBuildAdjacencyBuffer=True
+        source_model.ref().BuildSettings.ref().bRemoveDegenerates=True
 
         source_model2 = source_model.clone()
         self.assertEqual(source_model2.BuildSettings.bRecomputeNormals, False)