display-accts.py: fix up lint warnings

BUG=None
TEST=displaying accounts still works

Change-Id: I61ec2eaa32aaaacd8cfe0994edbf7b644b4cfaa8
Reviewed-on: https://chromium-review.googlesource.com/1180554
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alex Klein <saklein@chromium.org>
diff --git a/profiles/base/accounts/display-accts.py b/profiles/base/accounts/display-accts.py
index eb8c2d0..20b8c67 100755
--- a/profiles/base/accounts/display-accts.py
+++ b/profiles/base/accounts/display-accts.py
@@ -1,5 +1,5 @@
-#!/usr/bin/python
-#
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
 # Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -284,4 +284,4 @@
 
 
 if __name__ == '__main__':
-  exit(main(sys.argv[1:]))
+  sys.exit(main(sys.argv[1:]))