TST: fix (other check of) test for MultiIndexPyIntEngine on 32 bit (pandas-dev#19455)

Author: toobaz

pandas/tests/test_multilevel.py

@@ -1617,7 +1617,7 @@ def test_pyint_engine(self):
 
         # With missing key:
         idces = range(len(keys))
-        expected = np.array([-1] + list(idces), dtype='int64')
+        expected = np.array([-1] + list(idces), dtype=np.intp)
         missing = tuple([0, 1] * 5 * N)
         result = index.get_indexer([missing] + [keys[i] for i in idces])
         tm.assert_numpy_array_equal(result, expected)