Keep variable creation stack trace

theano/tensor/tests/test_casting.py

@@ -34,7 +34,7 @@ class test_casting(unittest.TestCase):
         for type1 in ['uint8', 'uint16', 'uint32', 'uint64',
                       'int8', 'int16', 'int32', 'int64', 'float32', 'float64']:
             x = TensorType(dtype=type1,
-                           broadcastable=(False, )).make_variable()
+                           broadcastable=(False, ))()
             for type2, converter in zip(['int8', 'int16', 'int32', 'int64',
                                          'float32', 'float64'],
                                         [_convert_to_int8, _convert_to_int16,