From 48e6ceebe9c96025b85974efa41b6c30feeb265b Mon Sep 17 00:00:00 2001
From: Ghe Rivero <ghe.rivero@hp.com>
Date: Mon, 24 Feb 2014 10:19:00 +0100
Subject: [PATCH] Fix unbound variable in debian element

Change-Id: Ie4bf86fa0ce387a55f1c390f58e58d17267ae61d
---
 elements/debian/root.d/08-debootstrap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/elements/debian/root.d/08-debootstrap b/elements/debian/root.d/08-debootstrap
index ea9a6e9a..a03b9d58 100755
--- a/elements/debian/root.d/08-debootstrap
+++ b/elements/debian/root.d/08-debootstrap
@@ -23,7 +23,7 @@ else
 fi
 DIB_RELEASE=${DIB_RELEASE:-unstable}
 DEBOOTSTRAP_TARBALL=$DIB_IMAGE_CACHE/debootstrap-${DISTRO_NAME}-${DIB_RELEASE}-${ARCH}.tar.gz
-if [ -n "$DIB_DEBIAN_MIRROR" ]; then
+if [ -n "${DIB_DEBIAN_MIRROR:-}" ]; then
     echo "Use of DIB_DEBIAN_MIRROR environment variable to configure mirror is deprecated."
     echo "Please use DIB_DISTRIBUTION_MIRROR instead."
     DIB_DISTRIBUTION_MIRROR=$DIB_DEBIAN_MIRROR