2 - Resolve an untriggerable issue in smartlist_string_num_isin(),
3 where if the function had ever in the future been used to check
4 for the presence of a too-large number, it would have given an
5 incorrect result. (Fortunately, we only used it for 16-bit
6 values.) Fixes bug 3175; bugfix on Tor 0.1.0.1-rc.