From 513f87659e2ee54919d434d6d7bf6f63977906cd Mon Sep 17 00:00:00 2001
From: Robert Kaussow <mail@geeklabor.de>
Date: Mon, 4 May 2020 19:50:13 +0200
Subject: [PATCH] fix undefined variable

---
 dockerautotag/Cli.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dockerautotag/Cli.py b/dockerautotag/Cli.py
index b67d7d3..a077932 100644
--- a/dockerautotag/Cli.py
+++ b/dockerautotag/Cli.py
@@ -51,10 +51,11 @@ class Autotag:
 
     @staticmethod
     def _tag_extra(tags, extra):
+        e = []
         if extra:
             e = [x.strip() for x in extra.split(",")]
 
-        return tags + e or []
+        return tags + e
 
     @staticmethod
     def _tag_suffix(tags, suffix):