networking/interface.c: huke remaining big statics; use malloc for INET[6]_rresolve

return value. Went thru callers and adjusted them - code got smaller too.

function                                             old     new   delta
ip_port_str                                            -     126    +126
INET6_rresolve                                       165     182     +17
static.cache                                          20      24      +4
route_main                                          2092    2091      -1
INET_sprint                                           61      59      -2
INET_nn                                                4       -      -4
INET6_sprint                                          59      53      -6
udp_do_one                                           518     508     -10
tcp_do_one                                           433     423     -10
raw_do_one                                           494     484     -10
traceroute_main                                     4117    4105     -12
INET_rresolve                                        334     321     -13
bb_displayroutes                                     494     456     -38
snprint_ip_port                                      244       -    -244
static.buff                                          264      16    -248
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 2/10 up/down: 147/-598)        Total: -451 bytes

size busybox_old busybox_unstripped
   text    data     bss     dec     hex filename
 751073    3048   14688  768809   bbb29 busybox_old
 750873    3048   14440  768361   bb969 busybox_unstripped

1 files changed, 8 insertions, 10 deletions

diff --git a/networking/traceroute.c b/networking/traceroute.c
index 9fc15d3..577738a 100644
--- a/networking/traceroute.c
+++ b/networking/traceroute.c
@@ -802,22 +802,20 @@ packet_ok(unsigned char *buf, int cc, struct sockaddr_in *from, int seq)
  * numeric value, otherwise try for symbolic name.
  */
 static inline void
-inetname(struct sockaddr_in *from)
+print_inetname(struct sockaddr_in *from)
 {
-	const char *n = NULL;
 	const char *ina;
-	char name[257];
 
-	if (!nflag && from->sin_addr.s_addr != INADDR_ANY) {
-		if (INET_rresolve(name, sizeof(name), from, 0x4000,
-						0xffffffff) >= 0)
-			n = name;
-	}
 	ina = inet_ntoa(from->sin_addr);
 	if (nflag)
 		printf(" %s", ina);
-	else
+	else {
+		char *n = NULL;
+		if (from->sin_addr.s_addr != INADDR_ANY)
+			n = xmalloc_sockaddr2host_noport((struct sockaddr*)from, sizeof(*from));
 		printf(" %s (%s)", (n ? n : ina), ina);
+		free(n);
+	}
 }
 
 static inline void
@@ -830,7 +828,7 @@ print(unsigned char *buf, int cc, struct sockaddr_in *from)
 	hlen = ip->ip_hl << 2;
 	cc -= hlen;
 
-	inetname(from);
+	print_inetname(from);
 #if ENABLE_FEATURE_TRACEROUTE_VERBOSE
 	if (verbose)
 		printf(" %d bytes to %s", cc, inet_ntoa(ip->ip_dst));