caml_alloc_some: use Field as an l-value instead of Store_field (#9819)
caml_alloc_some: use Field as an l-value instead of Store_field (#9819)


gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml