PyAPI: Use module names on initializaton

No need to re-convert from C strings to PyUnicode.

source/blender/python/generic/idprop_py_api.c

@@ -1560,7 +1560,7 @@ PyObject *BPyInit_idprop(void)
 
 	/* idprop.types */
 	PyModule_AddObject(mod, "types", (submodule = BPyInit_idprop_types()));
-	PyDict_SetItemString(sys_modules, PyModule_GetName(submodule), submodule);
+	PyDict_SetItem(sys_modules, PyModule_GetNameObject(submodule), submodule);
 	Py_INCREF(submodule);
 
 	return mod;