Fix cauthreceiver for flask in python3

This has been logging errors since forever -- but still worked in
practice :)

diff --git a/tools/communityauth/sample/pushreceiver/cauth_push_receiver.py b/tools/communityauth/sample/pushreceiver/cauth_push_receiver.py
index 810e8f9f8a0cf12d3749524cfec6c28849811ed8..a0894930cf8a9f8c97ee1b3d8b926119e05e2c91 100755 (executable)
--- a/tools/communityauth/sample/pushreceiver/cauth_push_receiver.py
+++ b/tools/communityauth/sample/pushreceiver/cauth_push_receiver.py
@@ -71,7 +71,7 @@ def application(environ, start_response):
             ('Content-type', 'text/plain'),
         ])
         return [
-            "OK",
+            b"OK",
         ]
     except Exception as e:
         print("Error receiving cauth call: {}".format(e), file=sys.stderr)
@@ -81,5 +81,5 @@ def application(environ, start_response):
         ])
 
         return [
-            "An internal server error occurred.\n",
+            b"An internal server error occurred.\n",
         ]