[PATCH] urlmon: Use the standard field name for an inner IUnknown

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=53200

Your paranoid android.


=== debian9 (32 bit report) ===

urlmon:
protocol.c:3656: Test failed: wait timed out
protocol: Timeout