From 51b1871ad20da16b257ec782f73c607d5fcf5f85 Mon Sep 17 00:00:00 2001
From: Taneli Hukkinen <hukkinj1@users.noreply.github.com>
Date: Sat, 9 May 2020 13:17:08 +0200
Subject: Make MapMutation.update consistently return an implicit None

---
 immutables/map.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/immutables/map.py b/immutables/map.py
index 3ea4656..a8cffd4 100644
--- a/immutables/map.py
+++ b/immutables/map.py
@@ -740,8 +740,7 @@ class MapMutation:
                 it = iter(kw.items())
 
         if it is None:
-
-            return self
+            return
 
         root = self.__root
         count = self.__count
-- 
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