Temporary vpn tls port

src/freedombone-app-vpn

     do
         data=$(tempfile 2>/dev/null)
         trap "rm -f $data" 0 1 2 5 15
+        currtlsport=$(grep 'VPN_TLS_PORT' temp.cfg | awk -F '=' '{print $2}')
+        if [ $currtlsport ]; then
+            VPN_TLS_PORT=$currtlsport
+        fi
         dialog --backtitle $"Freedombone Configuration" \
                --title $"VPN Configuration" \
                --form $"\nPlease enter your VPN details. Changing the port to 443 will help defend against censorship but will prevent other web apps from running." 12 65 1 \
-               $"TLS port:" 1 1 "$(grep 'VPN_TLS_PORT' temp.cfg | awk -F '=' '{print $2}')" 1 12 4 4 \
+               $"TLS port:" 1 1 "$VPN_TLS_PORT" 1 12 4 4 \
                2> $data
         sel=$?
         case $sel in