bpo-30855: Fix winfo_id related Tkinter test on Windows. (#4121)

Author: serhiy-storchaka

Lib/lib-tk/test/test_tkinter/test_widgets.py

@@ -88,7 +88,8 @@ def test_use(self):
         widget = self.create()
         self.assertEqual(widget['use'], '')
         parent = self.create(container=True)
-        wid = hex(parent.winfo_id())
+        # hex() adds the 'L' suffix for longs
+        wid = '%#x' % parent.winfo_id()
         widget2 = self.create(use=wid)
         self.assertEqual(widget2['use'], wid)