[PATCH] kernel32: Fix GetPrivateProfileInt for empty filename

[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=73600

Your paranoid android.

=== debiant (32 bit report) ===

kernel32:
profile.c:212: Test failed: expected ERROR_FILE_NOT_FOUND, got 0

=== debiant (32 bit Chinese:China report) ===

kernel32:
mailslot.c:327: Test failed: timeout too short 988
profile.c:212: Test failed: expected ERROR_FILE_NOT_FOUND, got 0

=== debiant (32 bit WoW report) ===

kernel32:
mailslot.c:327: Test failed: timeout too short 988
profile.c:212: Test failed: expected ERROR_FILE_NOT_FOUND, got 0

=== debiant (64 bit WoW report) ===

kernel32:
profile.c:212: Test failed: expected ERROR_FILE_NOT_FOUND, got 0