[advapi] Correct test in ControlService

[Troy Rollo]

ControlService currently calls QueryServiceStatus, which returns a BOOL, but 
treats a non-zero return code as indicating an error.

ChangeLog:
	Correct test of BOOL return value in ControlService
-------------- next part --------------
A non-text attachment was scrubbed...
Name: service.diffs
Type: text/x-diff
Size: 395 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20050419/413b0333/service.bin