iwinfo: fix warnings and whitespace

package/network/utils/iwinfo/src/iwinfo_esl.c

@@ -104,7 +104,6 @@ static int phy_to_netdev(const char *phy, char *netdev, size_t size)
 	int ret = -1;
 	DIR *d;
 	ifstatus_t ifstatus = 0;
-	enum wifi_mode mode;
 
 	memset(netdev, 0, size);
 
@@ -115,7 +114,7 @@ static int phy_to_netdev(const char *phy, char *netdev, size_t size)
 	}
 
 	/* Get real phy in case someone pass netdev */
-        if (netdev_to_phy(phy, rphy, sizeof(rphy)))
+	if (netdev_to_phy(phy, rphy, sizeof(rphy)))
 		return -1;
 
 	snprintf(path, sizeof(path), "/sys/class/ieee80211/%s/device/net", rphy);
@@ -503,18 +502,12 @@ static int esl_get_phyname(const char *ifname, char *buf)
 	return ret;
 }
 
-static int esl_get_enctype(const char *ifname, char *buf)
-{
-	esl_debug("%s() -------->\n", __func__);
-	return -1;
-}
-
 static int esl_get_assoclist(const char *ifname, char *buf, int *len)
 {
 	char netdev[16];
 	unsigned char stas[768] = {0};	/* 128 */
 	struct wifi_sta sx;
-	int noise, rssi, snr;
+	int noise, rssi;
 	enum wifi_bw bw;
 	int num = 128;
 	int ret;
@@ -541,7 +534,6 @@ static int esl_get_assoclist(const char *ifname, char *buf, int *len)
 		wifi_get_noise(ifname, &noise);
 		wifi_get_bandwidth(ifname, &bw);
 		rssi = sx.rssi[0];
-		snr = rssi - noise;
 
 		memset(ent, 0, sizeof(*ent));
 		memcpy(ent->mac, sx.macaddr, 6);
@@ -765,7 +757,6 @@ static int esl_get_countrylist(const char *ifname, char *buf, int *len)
 static int esl_get_hwmodelist(const char *ifname, int *buf)
 {
 	uint8_t std = 0;
-	char netdev[16];
 	int ret;
 	int i;
 	int std_arr[] = { IWINFO_80211_B,