gh-134584: Fix _CALL_BUILTIN_O test to reflect real-world usage (GH-143333)

Fix test to reflect real-world usage

Author: Fidget-Spinner

Lib/test/test_capi/test_opt.py

@@ -2201,18 +2201,18 @@ def test_call_builtin_o(self):
         def testfunc(n):
             x = 0
             for _ in range(n):
-                my_abs = abs
-                y = my_abs(1)
+                y = abs(1)
                 x += y
             return x
 
         res, ex = self._run_with_optimizer(testfunc, TIER2_THRESHOLD)
         self.assertEqual(res, TIER2_THRESHOLD)
         self.assertIsNotNone(ex)
         uops = get_opnames(ex)
+        pop_tops = [opname for opname in iter_opnames(ex) if opname == "_POP_TOP"]
         self.assertIn("_CALL_BUILTIN_O", uops)
-        self.assertNotIn("_POP_TOP", uops)
         self.assertIn("_POP_TOP_NOP", uops)
+        self.assertLessEqual(len(pop_tops), 1)
 
     def test_call_method_descriptor_o(self):
         def testfunc(n):