get_tags_and_duplicates(&revs.pending, &extra_refs);
- prepare_revision_walk(&revs);
+ if (prepare_revision_walk(&revs))
+ die("revision walk setup failed");
revs.diffopt.format_callback = show_filemodify;
DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
while ((commit = get_revision(&revs))) {