From 9593eec8477e7f60c23b1a9e26094f9d58f5a456 Mon Sep 17 00:00:00 2001
From: Alexander Todorov <atodorov@redhat.com>
Date: Mon, 3 Jul 2023 12:35:19 +0300
Subject: [PATCH] Fix for possibly undefined variable in CI script

---
 schutzbot/slack_notification.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/schutzbot/slack_notification.sh b/schutzbot/slack_notification.sh
index e5466402b..998345876 100755
--- a/schutzbot/slack_notification.sh
+++ b/schutzbot/slack_notification.sh
@@ -2,7 +2,7 @@
 
 set -eux
 
-if [ -z "$SLACK_WEBHOOK_URL" ]; then
+if [ -z "${SLACK_WEBHOOK_URL:-}" ]; then
     echo "INFO: Variable SLACK_WEBHOOK_URL is undefined"
     exit 0
 fi