Fix binding test case.

Author: fancidev

tests/binding_tests.py

@@ -389,7 +389,7 @@ def test_identity_buggy(self):
             self.assertTrue(s1 is not s2)
         elif QtCore.__name__.startswith('PySide2'):
             from PySide2 import __version__ as ver
-            if tuple(ver.split(".")) >= (5, 15, 2):
+            if tuple(map(int, ver.split("."))) >= (5, 15, 2):
                 self.assertTrue(s1 != s2)
                 self.assertTrue(s1 is not s2)
             else: