Use multi-phase initialization for unicode-names

kittens/unicode_input/unicode_names.c

@@ -91,20 +91,24 @@ static PyMethodDef module_methods[] = {
     {NULL, NULL, 0, NULL}        /* Sentinel */
 };
 
+static int
+exec_module(PyObject *m UNUSED) {
+    return 0;
+}
+
+IGNORE_PEDANTIC_WARNINGS
+static PyModuleDef_Slot slots[] = { {Py_mod_exec, (void*)exec_module}, {0, NULL} };
+END_IGNORE_PEDANTIC_WARNINGS
+
 static struct PyModuleDef module = {
    .m_base = PyModuleDef_HEAD_INIT,
    .m_name = "unicode_names",   /* name of module */
    .m_doc = NULL,
-   .m_size = -1,
+   .m_slots = slots,
    .m_methods = module_methods
 };
 
-
 EXPORTED PyMODINIT_FUNC
 PyInit_unicode_names(void) {
-    PyObject *m;
-
-    m = PyModule_Create(&module);
-    if (m == NULL) return NULL;
-    return m;
+	return PyModuleDef_Init(&module);
 }