Fix EAP password being lost when switching from an EAP network to

        for (WifiConfiguration.EnterpriseField field :

                config.enterpriseFields) {

            /*

             * Skip reading the password field, as the actual value isn't returned

             * anyway, and the returned '*' might cause confusion when saving the

             * config again, as '*' might actually be a valid password.

             */

            if (field == config.password) {

                continue;

            }

            value = mWifiStateTracker.getNetworkVariable(netId,

                    field.varName());

            if (!TextUtils.isEmpty(value)) {