cohttp_lwt: resolve_local_file fix double-slash bug
cohttp_lwt: resolve_local_file fix double-slash bug

fdopen/ocaml-cohttp,dsheets/ocaml-cohttp,marklrh/ocaml-cohttp,Drup/ocaml-cohttp,Drup/ocaml-cohttp,edwintorok/ocaml-cohttp,dsheets/ocaml-cohttp,fdopen/ocaml-cohttp,Drup/ocaml-cohttp,dsheets/ocaml-cohttp,mor1/ocaml-cohttp,marklrh/ocaml-cohttp,edwintorok/ocaml-cohttp,mor1/ocaml-cohttp,inhabitedtype/ocaml-cohttp,mor1/ocaml-cohttp,inhabitedtype/ocaml-cohttp,fdopen/ocaml-cohttp,marklrh/ocaml-cohttp,inhabitedtype/ocaml-cohttp,edwintorok/ocaml-cohttp