From e08d096f29502cf5eef3bd6a35807d38e6d7df29 Mon Sep 17 00:00:00 2001
From: Markus Unterwaditzer <markus@unterwaditzer.net>
Date: Sun, 20 Nov 2016 02:58:49 +0100
Subject: [PATCH] Fix edge case in DAV

---
 vdirsyncer/storage/dav.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vdirsyncer/storage/dav.py b/vdirsyncer/storage/dav.py
index a6bb0e7..165d57b 100644
--- a/vdirsyncer/storage/dav.py
+++ b/vdirsyncer/storage/dav.py
@@ -84,6 +84,8 @@ def _parse_xml(content):
 
 
 def _merge_xml(items):
+    if not items:
+        return []
     rv = items[0]
     for item in items[1:]:
         rv.extend(item.getiterator())