parser__pickler():  Use Py_DECREF() when reference is known to be non-NULL.
diff --git a/Modules/parsermodule.c b/Modules/parsermodule.c
index eba64a4..cd8381c 100644
--- a/Modules/parsermodule.c
+++ b/Modules/parsermodule.c
@@ -2704,7 +2704,7 @@
 	    result = Py_BuildValue("O(O)", pickle_constructor, tuple);
 	    Py_DECREF(tuple);
 	}
-	Py_XDECREF(newargs);
+	Py_DECREF(newargs);
     }
   finally:
     return (result);