don't traceback when using metacontact over several accounts. Fixes #5616

AUTHORS

@@ -1,13 +1,8 @@
 CURRENT DEVELOPERS:
 
 Alexander Cherniuk (ts33kr AT gmail.com)
-Nikos Kouremenos (kourem AT gmail.com)
 Yann Leboulanger (asterix AT lagaule.org)
-Julien Pivotto (roidelapluie AT gmail.com)
 Jonathan Schleifer (js-gajim AT webkeks.org)
-Travis Shirk (travis AT pobox.com)
-Brendan Taylor (whateley AT gmail.com)
-Jean-Marie Traissard (jim AT lapin.org)
 
 PAST DEVELOPERS:
 
@@ -15,3 +10,8 @@ Stefan Bethge (stefan AT lanpartei.de)
 Stephan Erb (steve-e AT h3c.de)
 Vincent Hanquez (tab AT snarc.org)
 Dimitur Kirov (dkirov AT gmail.com)
+Nikos Kouremenos (kourem AT gmail.com)
+Julien Pivotto (roidelapluie AT gmail.com)
+Travis Shirk (travis AT pobox.com)
+Brendan Taylor (whateley AT gmail.com)
+Jean-Marie Traissard (jim AT lapin.org)

src/gui_interface.py

@@ -480,6 +480,8 @@ class Interface:
                         jid_ = info['jid']
                         c_ = gajim.contacts.get_contact_with_highest_priority(
                             acct_, jid_)
+                        if not c_:
+                            continue
                         if c_.show not in ('offline', 'error'):
                             show_notif = False
                             break