Use explicit name for kwarg for clarity

Author: pshriwise

tests/regression_tests/xdg/tallies/test.py

@@ -73,7 +73,7 @@ def _compare_results(self):
                         reg_mesh_data = self.get_mesh_tally_data(tally)
                     else:
                         xdg_tally = tally
-                        xdg_mesh_data = self.get_mesh_tally_data(tally, True)
+                        xdg_mesh_data = self.get_mesh_tally_data(tally, structured=True)
 
         assert reg_mesh_data is not None
         assert xdg_mesh_data is not None