more of -Wall fixes from Cristian Ionescu-Idbohrn.

Some are fixing real bugs.

function                                             old     new   delta
syslogd_main                                         938     958     +20
get_signum                                           136     143      +7
obj_load                                             777     782      +5
recv_from_to                                         210     214      +4
get_next_block                                      1795    1799      +4
display_topmem_process_list                         1117    1121      +4
logread_main                                         484     487      +3
buffer_fill_and_print                                 73      76      +3
kill_main                                            687     689      +2
ll_remember_index                                    240     241      +1
do_stats                                             452     453      +1
if_readconf                                          166     165      -1
display_process_list                                1192    1191      -1
run_applet_and_exit                                  507     505      -2
print_signames                                        33      31      -2
parse_one_line                                      1092    1090      -2
find_out_spec                                         57      55      -2
add_ksymoops_symbols                                 421     419      -2
ash_main                                            1407    1402      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 11/8 up/down: 54/-17)            Total: 37 bytes

1 files changed, 3 insertions, 3 deletions

diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 50b96261b..c12391863 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -486,7 +486,7 @@ static const struct dhcp_client_t ext_dhcp_clients[] = {
 #if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
 static int dhcp_up(struct interface_defn_t *ifd, execfn *exec)
 {
-        int i;
+        unsigned i;
 #if ENABLE_FEATURE_IFUPDOWN_IP
         /* ip doesn't up iface when it configures it (unlike ifconfig) */
         if (!execute("ip link set %iface% up", ifd, exec))
@@ -522,7 +522,7 @@ static int dhcp_up(struct interface_defn_t *ifd ATTRIBUTE_UNUSED,
 #if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
 static int dhcp_down(struct interface_defn_t *ifd, execfn *exec)
 {
-        int i;
+        unsigned i;
         for (i = 0; i < ARRAY_SIZE(ext_dhcp_clients); i++) {
                 if (exists_execable(ext_dhcp_clients[i].name))
                         return execute(ext_dhcp_clients[i].stopcmd, ifd, exec);
@@ -1154,7 +1154,7 @@ int ifupdown_main(int argc, char **argv)
                 char *liface;
                 char *pch;
                 bool okay = 0;
-                unsigned cmds_ret;
+                int cmds_ret;
 
                 iface = xstrdup(target_list->data);
                 target_list = target_list->link;