1 files changed, 25 insertions, 21 deletions

diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c
index 7d542fb50d..9b368caf65 100644
--- a/Modules/_ctypes/callproc.c
+++ b/Modules/_ctypes/callproc.c
@@ -892,8 +892,7 @@ static PyObject *GetResult(PyObject *restype, void *result, PyObject *checker)
         return PyLong_FromLong(*(int *)result);
 
     if (restype == Py_None) {
-        Py_INCREF(Py_None);
-        return Py_None;
+        Py_RETURN_NONE;
     }
 
     dict = PyType_stgdict(restype);
@@ -1263,8 +1262,7 @@ static PyObject *free_library(PyObject *self, PyObject *args)
         return NULL;
     if (!FreeLibrary((HMODULE)hMod))
         return PyErr_SetFromWindowsErr(GetLastError());
-    Py_INCREF(Py_None);
-    return Py_None;
+    Py_RETURN_NONE;
 }
 
 static const char copy_com_pointer_doc[] =
@@ -1349,8 +1347,7 @@ static PyObject *py_dl_close(PyObject *self, PyObject *args)
                                ctypes_dlerror());
         return NULL;
     }
-    Py_INCREF(Py_None);
-    return Py_None;
+    Py_RETURN_NONE;
 }
 
 static PyObject *py_dl_sym(PyObject *self, PyObject *args)
@@ -1624,32 +1621,39 @@ resize(PyObject *self, PyObject *args)
         obj->b_size = size;
     }
   done:
-    Py_INCREF(Py_None);
-    return Py_None;
+    Py_RETURN_NONE;
 }
 
 static PyObject *
 unpickle(PyObject *self, PyObject *args)
 {
-    PyObject *typ;
-    PyObject *state;
-    PyObject *result;
-    PyObject *tmp;
+    PyObject *typ, *state, *meth, *obj, *result;
     _Py_IDENTIFIER(__new__);
     _Py_IDENTIFIER(__setstate__);
 
-    if (!PyArg_ParseTuple(args, "OO", &typ, &state))
+    if (!PyArg_ParseTuple(args, "OO!", &typ, &PyTuple_Type, &state))
         return NULL;
-    result = _PyObject_CallMethodId(typ, &PyId___new__, "O", typ);
-    if (result == NULL)
-        return NULL;
-    tmp = _PyObject_CallMethodId(result, &PyId___setstate__, "O", state);
-    if (tmp == NULL) {
-        Py_DECREF(result);
+    obj = _PyObject_CallMethodIdObjArgs(typ, &PyId___new__, typ, NULL);
+    if (obj == NULL)
         return NULL;
+
+    meth = _PyObject_GetAttrId(obj, &PyId___setstate__);
+    if (meth == NULL) {
+        goto error;
     }
-    Py_DECREF(tmp);
-    return result;
+
+    result = PyObject_Call(meth, state, NULL);
+    Py_DECREF(meth);
+    if (result == NULL) {
+        goto error;
+    }
+    Py_DECREF(result);
+
+    return obj;
+
+error:
+    Py_DECREF(obj);
+    return NULL;
 }
 
 static PyObject *