wpa_supplicant.sh: always use parameters from the current section

Using variables from the outer scope unnecessarily complicates the code and
leads to issues.

This patch fixes the bug when having an "adhoc" wifi-iface section before a
"sta" section prevents wpa_supplicant from using the key specified in the
corresponding section as it tries to use the "adhoc" key instead (1 by
default).

Signed-off-by: Paul Fertser <fercerpav@gmail.com>

SVN-Revision: 34716

package/network/services/hostapd/files/wpa_supplicant.sh

@@ -9,13 +9,8 @@ wpa_supplicant_setup_vif() {
 	local scan_ssid="1"
 	[ -n "$4" ] && freq="frequency=$4"
 
-	# make sure we have the encryption type and the psk
-	[ -n "$enc" ] || {
 	config_get enc "$vif" encryption
-	}
-	[ -n "$key" ] || {
 	config_get key "$vif" key
-	}
 
 	local net_cfg bridge
 	config_get bridge "$vif" bridge