There are spaces in the writing, delete space or try this
wlan=`cat /etc/enigma2/settings | grep systemoptions.wlan | cut -d "=" -f2`
if [ ! $wlan ] || [ ! -e $MODDIR/$wlan.ko ]; then
echo "No WLAN"
else
insmod $MODDIR/$wlan.ko
echo "$wlan WLAN"
# echo "$wlan WLAN" > /dev/vfd
# sleep 3
fi