rdiff-backup: fix build with Python 3.11

srcpkgs/rdiff-backup/patches/python-3.11.patch

@@ -0,0 +1,16 @@
+--- a/src/_librsyncmodule.c
++++ b/src/_librsyncmodule.c
+@@ -540,8 +540,13 @@ PyMODINIT_FUNC PyInit__librsync(void)
+ {
+   PyObject *m, *d;
+ 
++#if PY_VERSION_HEX >= 0x03090000
++  Py_SET_TYPE(&_librsync_SigMakerType, &PyType_Type);
++  Py_SET_TYPE(&_librsync_DeltaMakerType, &PyType_Type);
++#else
+   Py_TYPE(&_librsync_SigMakerType) = &PyType_Type;
+   Py_TYPE(&_librsync_DeltaMakerType) = &PyType_Type;
++#endif
+   static struct PyModuleDef librsync_def = {
+             PyModuleDef_HEAD_INIT, "_librsync", "RSync Lib", -1, _librsyncMethods, };
+   m = PyModule_Create(&librsync_def);