From 9000cfd8e19f05d0f2822f9f9f410fb9144cdd9f Mon Sep 17 00:00:00 2001
From: Utkarsh Gupta <utkarsh@ubuntu.com>
Date: Wed, 13 Mar 2024 18:43:48 +0530
Subject: [PATCH] Fix bash synxtax for index parameter expansion

---
 live-build/auto/build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/live-build/auto/build b/live-build/auto/build
index ec7ca52a..5e2eeef4 100755
--- a/live-build/auto/build
+++ b/live-build/auto/build
@@ -434,7 +434,7 @@ EOF
 			if [ -n "$BUILDSTAMP" ]; then
 				mkdir -p chroot/etc/cloud
 				cat > chroot/etc/cloud/build.info << EOF
-build_name: $PROJECT:${SUBPROJECT:}
+build_name: $PROJECT:${SUBPROJECT:-}
 serial: $BUILDSTAMP
 EOF
 				if [ "${PROJECT}" = "ubuntu-oci" ]; then