fixed a lua error

Author git <vivec@telvanni.eu>
Author date 2018-04-20 19:37:29
Author local date 2018-04-20 21:37:29 +0200
Committer git <vivec@telvanni.eu>
Committer date 2018-04-20 19:37:29
Committer local date 2018-04-20 21:37:29 +0200
Commit 8f09cd57fc02159d7744ac5a2208a3e7f1d2ed3a
Tree ed9387fb3573664059bda0f9117610b0b9b30997
Parent c84936979eacf6917d74d9cc9621de4546ab1b56
fixed a lua error