correction bienvenue vérifier prev_content

asmodee.py

@@ -1534,7 +1534,7 @@ def bienvenue(event): # Affichage d'un message d'accueil aux nouveaux venus
 		modules[room.room_id, 'welcome'] = False
 	if (modules[room.room_id, 'welcome'] and not event['sender'] == bot.client.user_id):
 		membership = event['content']['membership']
-		prev_member = event.get('content', {}).get('unsigned',{}).get('prev_content',{}).get('membership', None)
+		prev_member = event.get('unsigned',{}).get('prev_content',{}).get('membership', None)
 		nick = getNick(room,event)
 		alias = ""
 		if (len(room.aliases) > 0):