Issue #26200: Added Py_SETREF and replaced Py_XSETREF with Py_SETREF
in places where Py_DECREF was used.
diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c
index e5191a0..261c4bc 100644
--- a/Modules/_datetimemodule.c
+++ b/Modules/_datetimemodule.c
@@ -1058,7 +1058,7 @@
     /* Offset is normalized, so it is negative if days < 0 */
     if (GET_TD_DAYS(offset) < 0) {
         sign = '-';
-        Py_XSETREF(offset, delta_negative((PyDateTime_Delta *)offset));
+        Py_SETREF(offset, delta_negative((PyDateTime_Delta *)offset));
         if (offset == NULL)
             return -1;
     }
@@ -3045,7 +3045,7 @@
     if (dst == Py_None)
         goto Inconsistent;
     if (delta_bool((PyDateTime_Delta *)dst) != 0) {
-        Py_XSETREF(result, add_datetime_timedelta((PyDateTime_DateTime *)result,
+        Py_SETREF(result, add_datetime_timedelta((PyDateTime_DateTime *)result,
                                                  (PyDateTime_Delta *)dst, 1));
         if (result == NULL)
             goto Fail;
@@ -4445,7 +4445,7 @@
                 return NULL;
 
             if (offdiff != NULL) {
-                Py_XSETREF(result, delta_subtract(result, offdiff));
+                Py_SETREF(result, delta_subtract(result, offdiff));
                 Py_DECREF(offdiff);
             }
         }