From 8c8e26802a8b7c6592bb9ddcf646daab202b33bc Mon Sep 17 00:00:00 2001
From: Min RK <benjaminrk@gmail.com>
Date: Thu, 28 Mar 2019 13:00:09 +0100
Subject: [PATCH] fix unbound variable in post_push

---
 hooks/post_push | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hooks/post_push b/hooks/post_push
index 52c6cc0e..51b6cd55 100755
--- a/hooks/post_push
+++ b/hooks/post_push
@@ -12,7 +12,7 @@ function get_hub_version() {
   split=( ${hub_xyz//./ } )
   hub_xy="${split[0]}.${split[1]}"
   # add .dev on hub_xy so it's 1.0.dev
-  if [[ ! -z "${split[3]}" ]]; then
+  if [[ ! -z "${split[3]:-}" ]]; then
     hub_xy="${hub_xy}.${split[3]}"
   fi
 }