user32: Fix a couple of typos.

[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
http://testbot.winehq.org/JobDetails.pl?Key=16847

Your paranoid android.


=== TEST64_W7SP1 (32 bit win) ===
win.c:6753: Test failed: FlashWindowEx succeeded
win.c:6764: Test failed: FlashWindowEx failed with -559038737

=== TEST64_W7SP1 (64 bit win) ===
win.c:6753: Test failed: FlashWindowEx succeeded
win.c:6764: Test failed: FlashWindowEx failed with -559038737