[bug] return the message uid after add it to the collection

MessageCollection.add_msg was not returning the uid of the message added
making the incoming service not deleting the emails from the incoming
queue.

* Related: #7158

1 files changed, 2 insertions, 1 deletions

diff --git a/src/leap/mail/mail.py b/src/leap/mail/mail.py
index 4a73186..1a60c6d 100644
--- a/src/leap/mail/mail.py
+++ b/src/leap/mail/mail.py
@@ -654,9 +654,10 @@ class MessageCollection(object):
     def removeListener(self, listener):
         self._listeners.remove(listener)
 
-    def notify_new_to_listeners(self, *args):
+    def notify_new_to_listeners(self, result):
         for listener in self._listeners:
             listener.notify_new()
+        return result
 
     def cb_signal_unread_to_ui(self, result):
         """