wifi: fix duplicate ht capabilities in the hostapd config file by clearing the list at config load time

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22099 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/base-files/files/sbin/wifi

@@ -149,12 +149,21 @@ scan_wifi() {
 	local cfgfile="$1"
 	DEVICES=
 	config_cb() {
+		local type="$1"
+		local section="$2"
+
+		# section start
+		case "$type" in
+			wifi-device)
+				append DEVICES "$section"
+				config_set "$section" vifs ""
+				config_set "$section" ht_capab ""
+			;;
+		esac
+
+		# section end
 		config_get TYPE "$CONFIG_SECTION" TYPE
 		case "$TYPE" in
-			wifi-device)
-				append DEVICES "$CONFIG_SECTION"
-				config_set "$CONFIG_SECTION" vifs ""
-			;;
 			wifi-iface)
 				config_get device "$CONFIG_SECTION" device
 				config_get vifs "$device" vifs