ext2fs_htree_get_count
entries_num = ext2fs_htree_get_count(level->h_entries);
ent_num = ext2fs_htree_get_count(entries);
if (ext2fs_htree_get_count(root_entries) ==
ext2fs_htree_get_count(level->h_entries))
cnt = ext2fs_htree_get_count(entp);