Fixed a problem with the code to update missing person record association in a meeting registration record.

 - Legacy-Id: 18044

Author: levkowetz

ietf/ietfauth/utils.py

@@ -255,8 +255,9 @@ def scope_registration(self):
             # later.
             email_list = person.email_set.values_list('address')
             reg = MeetingRegistration.objects.filter(email__in=email_list, meeting=meeting).first()
-            reg.person = person
-            reg.save()
+            if reg:
+                reg.person = person
+                reg.save()
         info = {}
         if reg:
             # maybe register attendence if logged in to follow a meeting