From 43de5440e5cab6ef337c1943cfc6ebd9d6b6b545 Mon Sep 17 00:00:00 2001
From: "James O. D. Hunt" <james.o.hunt@intel.com>
Date: Thu, 19 May 2022 14:34:34 +0100
Subject: [PATCH] snap: Fix unbound variable error

Don't assume `GITHUB_REF` is set.

Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
---
 snap/snapcraft.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index 68d9369fb8..be13a7314b 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -21,8 +21,8 @@ parts:
       version="9999"
       kata_url="https://github.com/kata-containers/kata-containers"
 
-      if echo "${GITHUB_REF}" | grep -q -E "^refs/tags"; then
-        version=$(echo ${GITHUB_REF} | cut -d/ -f3)
+      if echo "${GITHUB_REF:-}" | grep -q -E "^refs/tags"; then
+        version=$(echo ${GITHUB_REF:-} | cut -d/ -f3)
         git checkout ${version}
       fi