Fix invite script

src/freedombone-mesh-invite

@@ -31,11 +31,12 @@ PROJECT_NAME='freedombone'
 export TEXTDOMAIN=${PROJECT_NAME}-mesh-invite
 export TEXTDOMAINDIR="/usr/share/locale"
 
-invite=$(su -c 'sbot invite.create 1' - scuttlebot | awk -F '"' '{print $2}')
+invite=$(sudo -- bash -c 'su -c "sbot invite.create 1" - scuttlebot' | awk -F '"' '{print $2}')
 
 if [ ${#invite} -lt 10 ]; then
    dialog --title $"Create Invite" \
           --msgbox $"\nThe invite could not be created" 7 70
+   exit 1
 fi
 
 echo "$invite" | xclip -selection c