From 9b5b0f23c972a2165791e6a4722e3c0f8a99f3ae Mon Sep 17 00:00:00 2001
From: Antoine Nguyen <tonio@ngyn.org>
Date: Sat, 12 May 2018 17:55:10 +0200
Subject: [PATCH] Ensure immutable iteration.

---
 modoboa/relaydomains/forms.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modoboa/relaydomains/forms.py b/modoboa/relaydomains/forms.py
index 0e5d4b2b1..f9b40e6d6 100644
--- a/modoboa/relaydomains/forms.py
+++ b/modoboa/relaydomains/forms.py
@@ -22,7 +22,7 @@ class DisableSignals(object):
             self.disconnect(signal)
 
     def __exit__(self, exc_type, exc_val, exc_tb):
-        for signal in self.stashed_signals.keys():
+        for signal in list(self.stashed_signals.keys()):
             self.reconnect(signal)
 
     def disconnect(self, signal):