[PATCH] user32: fixed sizeof() to MultiByteToWideChar

[Marvin]

Hi,

While running your changed tests on Windows, 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://newtestbot.winehq.org/JobDetails.pl?Key=3217

Your paranoid android.


=== w864 (32 bit class) ===
class.c:690: Test failed: Windows should be Unicode