bpo-26423: Fix test_descr.test_wrap_lenfunc_bad_cast() on 32-bit Windows (GH-13629)

Skip the test if xrange(sys.maxsize) raises an OverflowError.

Author: vstinner

Lib/test/test_descr.py

@@ -404,7 +404,11 @@ def foo(self): return 1
         self.assertEqual(a.getstate(), 100)
 
     def test_wrap_lenfunc_bad_cast(self):
-        self.assertEqual(xrange(sys.maxsize).__len__(), sys.maxsize)
+        try:
+            large_range = xrange(sys.maxsize)
+        except OverflowError as exc:
+            self.skipTest("xrange(sys.maxsize) failed with: %s" % exc)
+        self.assertEqual(large_range.__len__(), sys.maxsize)
 
 
 class ClassPropertiesAndMethods(unittest.TestCase):