From 8bb930dd041a18073f7274665adb9582e93399b9 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Sat, 8 Dec 2018 04:17:05 +0100
Subject: [PATCH] fix OrderedDictWithIndex

setitem() would modify the dict of the class. oops.
---
 electrum/util.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/electrum/util.py b/electrum/util.py
index fd2bb4721..d2ca64a0f 100644
--- a/electrum/util.py
+++ b/electrum/util.py
@@ -1007,7 +1007,9 @@ class OrderedDictWithIndex(OrderedDict):
     Note: very inefficient to modify contents, except to add new items.
     """
 
-    _key_to_pos = {}
+    def __init__(self):
+        super().__init__()
+        self._key_to_pos = {}
 
     def _recalc_key_to_pos(self):
         self._key_to_pos = {key: pos for (pos, key) in enumerate(self.keys())}