libbb: code shrink: introduce and use [_]exit_FAILURE()

function                                             old     new   delta
exit_FAILURE                                           -       7      +7
_exit_FAILURE                                          -       7      +7
run                                                  198     199      +1
restore_state_and_exit                               114     115      +1
xbsd_write_bootstrap                                 399     397      -2
vfork_compressor                                     209     207      -2
sig_handler                                           12      10      -2
serial_ctl                                           154     152      -2
parse_args                                          1169    1167      -2
onintr                                                21      19      -2
make_new_session                                     493     491      -2
login_main                                           988     986      -2
gotsig                                                35      33      -2
do_iplink                                           1315    1313      -2
addgroup_main                                        397     395      -2
inetd_main                                          1911    1908      -3
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/12 up/down: 16/-25)            Total: -9 bytes

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

1 files changed, 2 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 6191debb1..18336da23 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1281,6 +1281,8 @@ void set_task_comm(const char *comm) FAST_FUNC;
 #endif
 void exit_SUCCESS(void) NORETURN FAST_FUNC;
 void _exit_SUCCESS(void) NORETURN FAST_FUNC;
+void exit_FAILURE(void) NORETURN FAST_FUNC;
+void _exit_FAILURE(void) NORETURN FAST_FUNC;
 
 /* Helpers for daemonization.
  *