Comment 0 for bug 1540731

For some reason mir_acceptance_tests is failing for me consistently today:

[ RUN ] PromptSessionClientAPI.client_pid_is_associated_with_session
unknown file: Failure

Unexpected mock function call - returning directly.
    Function call: prompt_provider_added(@0x7f1488000a20 8-byte object <A8-8E D8-E6 14-7F 00-00>, @0x7f14deaa7e70 16-byte object <F0-28 00-88 14-7F 00-00 E0-28 00-88 14-7F 00-00>)
Google Mock tried the following 1 expectation, but it didn't match:

/home/dan/bzr/mir/trunk/tests/acceptance-tests/test_prompt_session_client_api.cpp:399: EXPECT_CALL(*the_mock_prompt_session_listener(), prompt_provider_added(_, Not(IsSessionWithPid(server_pid))))...
  Expected arg #1: not (is session with pid 9532)
           Actual: 16-byte object <F0-28 00-88 14-7F 00-00 E0-28 00-88 14-7F 00-00>
         Expected: to be called once
           Actual: never called - unsatisfied and active
/home/dan/bzr/mir/trunk/tests/acceptance-tests/test_prompt_session_client_api.cpp:399: Failure
Actual function call count doesn't match EXPECT_CALL(*the_mock_prompt_session_listener(), prompt_provider_added(_, Not(IsSessionWithPid(server_pid))))...
         Expected: to be called once
           Actual: never called - unsatisfied and active
[ FAILED ] PromptSessionClientAPI.client_pid_is_associated_with_session (14 ms)