[PATCH] advapi32: do not use invalid pSD value (Coverity)

[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=23641

Your paranoid android.


=== WNT4WSSP6 (32 bit service) ===
service.c:1859: Test failed: Expected ERROR_INSUFFICIENT_BUFFER, got 87

=== W2KPROSP4 (32 bit service) ===
service.c:1859: Test failed: Expected ERROR_INSUFFICIENT_BUFFER, got 487
service.c:1862: Test failed: Expected QueryServiceObjectSecurity to succeed: result 0

=== WXPPROSP3 (32 bit service) ===
service.c:1859: Test failed: Expected ERROR_INSUFFICIENT_BUFFER, got 487
service.c:1862: Test failed: Expected QueryServiceObjectSecurity to succeed: result 0

=== W2K3R2SESP2 (32 bit service) ===
service.c:1859: Test failed: Expected ERROR_INSUFFICIENT_BUFFER, got 487
service.c:1862: Test failed: Expected QueryServiceObjectSecurity to succeed: result 0