package: swconfig: let variable name be local

Let the first parameter of function config_get be local, because there
is a chance that config_get won't export the variable.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>

SVN-Revision: 41000

package/network/config/swconfig/files/switch.sh

@@ -2,6 +2,7 @@
 # Copyright (C) 2009 OpenWrt.org
 
 setup_switch_dev() {
+	local name
 	config_get name "$1" name
 	name="${name:-$1}"
 	[ -d "/sys/class/net/$name" ] && ifconfig "$name" up