Fix incorrect use of bytes needed parameter in QueryServiceConfigW

[Troy Rollo]

In QueryServiceConfigW, there is a test for the number of bytes needed being 
greater than *pcbBytesNeeded, which is an output parameter, not an input one. 
The comparison should be against cbBufSize. This results in unexpected 
failures in that method, and has the potential to generate SEGVs

ChangeLog:
 Correct incorrect use of arguments to QueryServiceConfigW.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: qsc.diff
Type: text/x-diff
Size: 794 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20050304/814ee7df/qsc.bin