WIP: pango: Fix various leak on Windows
Apply pangowin32 leak patches reported at https://gitlab.gnome.org/GNOME/pango/-/merge_requests/317 and https://gitlab.gnome.org/GNOME/pango/-/merge_requests/318
Apply pangowin32 leak patches reported at https://gitlab.gnome.org/GNOME/pango/-/merge_requests/317 and https://gitlab.gnome.org/GNOME/pango/-/merge_requests/318