Compilation error in oct-hist.cc: gnulib close/rpl_close

[Michael Goffioul]

../../src/oct-hist.cc(418) : error C2039: 'rpl_close' : is not a
member of 'std::basic_fstream<_Elem,_Traits>'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
../../src/oct-hist.cc(479) : error C2039: 'rpl_close' : is not a
member of 'std::basic_fstream<_Elem,_Traits>'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]

Using the same trick as in load-save.cc seems to work fine.

Michael.