*: move get_sock_lsa and xwrite_str to libbb, use where appropriate

function                                             old     new   delta
get_sock_lsa                                           -      72     +72
buffer_fill_and_print                                179     196     +17
parse_expr                                           824     832      +8
read_base64                                          343     348      +5
nameval                                              202     206      +4
fbset_main                                          1694    1698      +4
expand                                              1849    1853      +4
udhcp_send_kernel_packet                             249     252      +3
udhcp_get_option                                     223     222      -1
chat_main                                           1246    1245      -1
pack_gzip                                           1661    1659      -2
doset                                                299     297      -2
bb__parsespent                                       119     117      -2
test_main                                            260     257      -3
qgravechar                                           109     106      -3
tcpudpsvd_main                                      1834    1830      -4
sysctl_display_all                                   589     580      -9
xopen_xwrite_close                                    44      33     -11
prs                                                   30      18     -12
find_main                                            418     406     -12
full_write2_str                                       25      12     -13
adduser_main                                         667     654     -13
evaltreenr                                           817     802     -15
evaltree                                             817     802     -15
tftpd_main                                           526     493     -33
ftpd_main                                           2050    1990     -60
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 7/18 up/down: 117/-211)         Total: -94 bytes

1 files changed, 0 insertions, 15 deletions

diff --git a/networking/tftp.c b/networking/tftp.c
index 799dd9903..fa0851615 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -622,21 +622,6 @@ int tftp_main(int argc UNUSED_PARAM, char **argv)
 #endif /* ENABLE_TFTP */
 
 #if ENABLE_TFTPD
-
-/* TODO: libbb candidate? */
-static len_and_sockaddr *get_sock_lsa(int s)
-{
-        len_and_sockaddr *lsa;
-        socklen_t len = 0;
-
-        if (getsockname(s, NULL, &len) != 0)
-                return NULL;
-        lsa = xzalloc(LSA_LEN_SIZE + len);
-        lsa->len = len;
-        getsockname(s, &lsa->u.sa, &lsa->len);
-        return lsa;
-}
-
 int tftpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int tftpd_main(int argc UNUSED_PARAM, char **argv)
 {