omemo: Update decrypt_message with slixmpp-omemo changes

decrypt_message now takes an Encrypted container and a sender (JID)
instead of a Message object.

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

plugins/omemo_plugin.py

@@ -86,7 +86,9 @@ class Plugin(E2EEPlugin):
 
         body = None
         try:
-            body = self.core.xmpp['xep_0384'].decrypt_message(message, allow_untrusted)
+            mfrom = message['from']
+            encrypted = message['omemo_encrypted']
+            body = self.core.xmpp['xep_0384'].decrypt_message(encrypted, mfrom, allow_untrusted)
             body = body.decode('utf-8')
         except (MissingOwnKey,):
             # The message is missing our own key, it was not encrypted for