Fix bug with v-add-sys-ip

bin/v-add-sys-ip

@@ -80,7 +80,7 @@ if [ -z "$sys_ip_check" ]; then
     # Improve check netplan
     if dpkg-query -W -f'${Status}' "netplan*" 2>/dev/null | grep -q "ok installed"; then 
         result=$(cat /etc/netplan/*.yaml 2>/dev/null | grep $(hostname -I | cut -d' ' -f1));
-        if [ ! -z $result ]; then 
+        if [ ! -z "$result" ]; then 
             netplan=1
         else
             netplan=0