nicer way to handle no peers

oml/user/models.py

@@ -161,13 +161,9 @@ class User(db.Model):
             if not was_peering:
                 Changelog.record(state.user(), 'addpeer', self.id, self.nickname)
             if not 'index' in self.info:
-                qs = User.query.filter_by(peered=True)
-                if qs.count():
-                    self.info['index'] = max([
-                        u.info.get('index', -1) for u in qs
-                    ]) + 1
-                else:
-                    self.info['index'] = 1
+                self.info['index'] = max([
+                    u.info.get('index', -1) for u in User.query.filter_by(peered=True)
+                ] + [0]) + 1
             self.peered = True
             self.save()
             if self.id in state.removepeer: