Fixes recursion bug in disambiguate_in().

[ohcount] / test / expected_dir / limbo.m

limbo   code    Htmlent: module {
limbo   code            PATH:   con "/dis/lib/htmlent.dis";
limbo   code            entities:       array of (string, int);
limbo   blank   
limbo   code            init:   fn();
limbo   code            lookup: fn(name: string): int;
limbo   code            conv:   fn(s: string): string;
limbo   code    };