Fixed auto_answer when using Bonjour

blink/sessions.py

@@ -5243,7 +5243,13 @@ class IncomingRequest(QObject):
         self.dialog.username_label.setText(contact.name or session.remote_identity.display_name or address)
         settings = SIPSimpleSettings()
             
-        if settings.audio.auto_answer and contact and contact.settings.auto_answer and settings.audio.auto_answer_interval:
+        try:
+            if settings.audio.auto_answer and contact.settings.auto_answer and settings.audio.auto_answer_interval:
+                auto_answer_interval = settings.audio.auto_answer_interval        
+        except AttributeError:
+            pass
+        else:
+            if auto_answer_interval > 0:
                 self.dialog.setAutoAnswer(settings.audio.auto_answer_interval)
                 self._auto_answer_timer = QTimer()
                 self._auto_answer_timer.setInterval(settings.audio.auto_answer_interval * 1000)