Found another memory leak in longrangeiter. And redo the previous correction

without calling PyType_Ready().

Question 1: Should the interpreter register all types with PyType_Ready()?
Many types seem to avoid it.

Question 2: To reproduce the problem, run the following code:
    def f():
        while True:
           for a in iter(range(0,1,10**20)):
              pass
    f()
And watch the memory used by the process.
How do we test this in a unittest?

Objects/object.c

@@ -1509,9 +1509,6 @@ _Py_ReadyTypes(void)
 
 	if (PyType_Ready(&PyStdPrinter_Type) < 0)
 		Py_FatalError("Can't initialize StdPrinter");
-
-	if (PyType_Ready(&PyRange_Type) < 0)
-		Py_FatalError("Can't initialize 'range'");
 }
 
 

Objects/rangeobject.c

@@ -107,7 +107,7 @@ range_dealloc(rangeobject *r)
     Py_DECREF(r->start);
     Py_DECREF(r->stop);
     Py_DECREF(r->step);
-    Py_Type(r)->tp_free(r);
+    PyObject_Del(r);
 }
 
 /* Return number of items in range (lo, hi, step), when arguments are
@@ -482,6 +482,7 @@ longrangeiter_dealloc(longrangeiterobject *r)
     Py_XDECREF(r->start);
     Py_XDECREF(r->step);
     Py_XDECREF(r->len);
+    PyObject_Del(r);
 }
 
 static PyObject *