From 4e145d85d7a9eb784c5f6f32007486ecbec26a53 Mon Sep 17 00:00:00 2001
From: Lars Gierth <larsg@systemli.org>
Date: Wed, 3 Oct 2018 08:04:32 +0200
Subject: [PATCH] Fix handling of null strings

---
 config/types.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/config/types.go b/config/types.go
index 376cc64f0728..58451c68f12d 100644
--- a/config/types.go
+++ b/config/types.go
@@ -17,7 +17,11 @@ func (o *Strings) UnmarshalJSON(data []byte) error {
 	if err := json.Unmarshal(data, &value); err != nil {
 		return err
 	}
-	*o = []string{value}
+	if len(value) == 0 {
+		*o = []string{}
+	} else {
+		*o = []string{value}
+	}
 	return nil
 }