assorted fixes for bugs found with randomconfig

networking/ether-wake.c

@@ -107,7 +107,8 @@ static inline int get_wol_pw(const char *ethoptarg, unsigned char *wol_passwd);
 
 int ether_wake_main(int argc, char *argv[])
 {
-	char *ifname = "eth0", *pass = NULL;
+	const char *ifname = "eth0";
+	char *pass = NULL;
 	unsigned long flags;
 	unsigned char wol_passwd[6];
 	int wol_passwd_sz = 0;

networking/ping.c

@@ -190,7 +190,7 @@ int ping_main(int argc, char **argv)
 	len_and_sockaddr *lsa;
 #if ENABLE_PING6
 	sa_family_t af = AF_UNSPEC;
-	while (++argv[0][0]) == '-') {
+	while (++argv[0][0] == '-') {
 		if (argv[0][1] == '4') {
 			af = AF_INET;
 			continue;