From a844c6f8cd56140f4896bf2ca9741d4fdd1e6e61 Mon Sep 17 00:00:00 2001
From: Daniel Watkins <daniel.watkins@canonical.com>
Date: Tue, 17 Apr 2018 22:01:47 -0400
Subject: [PATCH] Fix another unbound variable

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

diff --git a/live-build/functions b/live-build/functions
index 484e5046..ac4912f5 100644
--- a/live-build/functions
+++ b/live-build/functions
@@ -461,7 +461,7 @@ snap_prepare() {
     local CHROOT_ROOT=$1
     # Optional. If set, should be a colon-separated string of brand:model to be
     # used for the image's model assertion
-    local CUSTOM_BRAND_MODEL=$2
+    local CUSTOM_BRAND_MODEL=${2:-generic:generic-classic}
 
     snap_prepare_assertions "$CHROOT_ROOT" "$CUSTOM_BRAND_MODEL"