libiproute: audit callgraph, shortcut error paths into die() functions.

Kill a few statics, made other globals smaller:
oneline is smallint, _SL_ is char

function                                             old     new   delta
print_tunnel                                         693     731     +38
print_route                                         1775    1777      +2
print_addrinfo                                      1495    1497      +2
ipaddr_list_or_flush                                2826    2828      +2
oneline                                                4       1      -3
_SL_                                                   4       1      -3
ipaddr_modify                                       1476    1472      -4
parse_address                                        124     119      -5
ip_parse_common_args                                 429     423      -6
on_off                                                53      46      -7
do_del_ioctl                                         113     106      -7
do_add_ioctl                                         120     113      -7
do_show                                              864     856      -8
iprule_list                                          157     148      -9
do_iptunnel                                          310     299     -11
do_add                                               143     126     -17
get_ctl_fd                                            95      76     -19
set_address                                          108      84     -24
ip_main                                              351     323     -28
static.ifr                                            32       -     -32
parse_args                                          1992    1949     -43
iproute_list_or_flush                               1673    1582     -91
do_iplink                                           1583    1485     -98
filter                                               280       -    -280
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 4/18 up/down: 44/-702)         Total: -658 bytes

1 files changed, 3 insertions, 3 deletions

diff --git a/networking/libiproute/ip_parse_common_args.c b/networking/libiproute/ip_parse_common_args.c
index 00a891232..6efbc6912 100644
--- a/networking/libiproute/ip_parse_common_args.c
+++ b/networking/libiproute/ip_parse_common_args.c
@@ -23,8 +23,8 @@
 
 
 int preferred_family = AF_UNSPEC;
-int oneline = 0;
-const char * _SL_ = NULL;
+smallint oneline;
+char _SL_;
 
 void ip_parse_common_args(int *argcp, char ***argvp)
 {
@@ -73,7 +73,7 @@ void ip_parse_common_args(int *argcp, char ***argvp)
 		argc--;
 		argv++;
 	}
-	_SL_ = oneline ? "\\" : "\n" ;
+	_SL_ = oneline ? '\\' : '\n' ;
 	*argcp = argc;
 	*argvp = argv;
 }