busybox

od: code shrink

function                                             old     new   delta
exit_code                                              -       1      +1
open_next_file                                        73      72      -1
limit_bytes_to_format                                  1       -      -1
ioerror                                                1       -      -1
flag_pseudo_start                                      1       -      -1
flag_dump_strings                                      1       -      -1
od_main                                             2275    2164    -111

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>