Avoid ob_size access in nanobind patch

Author: msimacek

graalpython/lib-graalpython/patches/nanobind/nanobind.patch

@@ -941,6 +941,27 @@ index c49b7bb..3a5be09 100644
  #  if PY_VERSION_HEX < 0x030A0000
  #    define NB_TYPE_GET_SLOT_IMPL 1 // Custom implementation of nb::type_get_slot
  #  else
+diff --git a/nanobind/include/nanobind/nb_types.h b/nanobind/include/nanobind/nb_types.h
+index b83a651..de16f03 100644
+--- a/nanobind/include/nanobind/nb_types.h
++++ b/nanobind/include/nanobind/nb_types.h
+@@ -877,14 +877,14 @@ inline detail::fast_iterator tuple::begin() const {
+ }
+ inline detail::fast_iterator tuple::end() const {
+     PyTupleObject *v = (PyTupleObject *) m_ptr;
+-    return PySequence_Fast_ITEMS((PyObject*)v) + v->ob_base.ob_size;
++    return PySequence_Fast_ITEMS((PyObject*)v) + Py_SIZE(v);
+ }
+ inline detail::fast_iterator list::begin() const {
+     return PySequence_Fast_ITEMS((PyObject*)((PyListObject *) m_ptr));
+ }
+ inline detail::fast_iterator list::end() const {
+     PyListObject *v = (PyListObject *) m_ptr;
+-    return PySequence_Fast_ITEMS((PyObject*)v) + v->ob_base.ob_size;
++    return PySequence_Fast_ITEMS((PyObject*)v) + Py_SIZE(v);
+ }
+ #endif
+ 
 diff --git a/nanobind/include/nanobind/stl/detail/chrono.h b/nanobind/include/nanobind/stl/detail/chrono.h
 index 39bd5d9..6e9efb0 100644
 --- a/nanobind/include/nanobind/stl/detail/chrono.h