2.45.41 (unstable):

Glib:
* Undeprecate HelperList and List_Iterator because gtkmm-2.4 uses these
  in its undeprecated API. However, all of gtkmm-2.4 is deprecated, so
  you (Inkscape) shouldn't be using it anyway.
  Bug #752797 (Adam Williamson)
  (Murray Cumming)