}
strbuf_addf(msg, "%s%sindex %s..", line_prefix, set,
find_unique_abbrev(one->oid.hash, abbrev));
- strbuf_addstr(msg, find_unique_abbrev(two->oid.hash, abbrev));
+ strbuf_add_unique_abbrev(msg, two->oid.hash, abbrev);
if (one->mode == two->mode)
strbuf_addf(msg, " %06o", one->mode);
strbuf_addf(msg, "%s\n", reset);