ntpd: trivial -2 byte code optimization

[oweals/busybox.git] / networking / ipcalc.c

diff --git a/networking/ipcalc.c b/networking/ipcalc.c
index 3f99b7511251b16c2bec8715c7942e05df692de2..18abc12eb405a07d8ae6aae342cab8d62a99d5fb 100644 (file)
--- a/networking/ipcalc.c
+++ b/networking/ipcalc.c
@@ -12,7 +12,6 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <getopt.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>
 
@@ -75,7 +74,7 @@ int get_prefix(unsigned long netmask);
                ;
 #endif
 
-int ipcalc_main(int argc, char **argv);
+int ipcalc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ipcalc_main(int argc, char **argv)
 {
        unsigned opt;
@@ -87,7 +86,7 @@ int ipcalc_main(int argc, char **argv)
 #if ENABLE_FEATURE_IPCALC_LONG_OPTIONS
        applet_long_options = ipcalc_longopts;
 #endif
-       opt = getopt32(argc, argv, "mbn" USE_FEATURE_IPCALC_FANCY("phs"));
+       opt = getopt32(argv, "mbn" IF_FEATURE_IPCALC_FANCY("phs"));
        argc -= optind;
        argv += optind;
        if (opt & (BROADCAST | NETWORK | NETPREFIX)) {
@@ -176,15 +175,12 @@ int ipcalc_main(int argc, char **argv)
 
                if (opt & HOSTNAME) {
                        struct hostent *hostinfo;
-                       int x;
 
                        hostinfo = gethostbyaddr((char *) &ipaddr, sizeof(ipaddr), AF_INET);
                        if (!hostinfo) {
-                               bb_herror_msg_and_die("cannot find hostname for %s", argv[0]);
-                       }
-                       for (x = 0; hostinfo->h_name[x]; x++) {
-                               hostinfo->h_name[x] = tolower(hostinfo->h_name[x]);
+                               bb_herror_msg_and_die("can't find hostname for %s", argv[0]);
                        }
+                       str_tolower(hostinfo->h_name);
 
                        printf("HOSTNAME=%s\n", hostinfo->h_name);
                }