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, 10 insertions, 0 deletions

diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 465e536..b03af85 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -433,3 +433,13 @@ void FAST_FUNC _exit_SUCCESS(void)
 {
 	_exit(EXIT_SUCCESS);
 }
+
+void FAST_FUNC exit_FAILURE(void)
+{
+	exit(EXIT_FAILURE);
+}
+
+void FAST_FUNC _exit_FAILURE(void)
+{
+	_exit(EXIT_FAILURE);
+}