Toplevel: fix off-by-one error
Toplevel: fix off-by-one error

Ignore-this: 688463f0721f9033a2dd1f73f724ef60

darcs-hash:20111209131924-c8b6b-0b0b217793497b176b1cb99c0988b9bf55a68ec2

OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,alainfrisch/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,OCamlPro-Henry/js_of_ocaml