Paul Vriens : advapi32: Prevent a crash when passing an allowed NULL parameter.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ce64e0d055a35ddb26c5962878ad29e7b37d7640
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=ce64e0d055a35ddb26c5962878ad29e7b37d7640

Author: Paul Vriens <paul.vriens.wine at gmail.com>
Date:   Thu Aug 21 17:17:52 2008 +0200

advapi32: Prevent a crash when passing an allowed NULL parameter.

---

 dlls/advapi32/service.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/advapi32/service.c b/dlls/advapi32/service.c
index 45666ab..d5a2c31 100644
--- a/dlls/advapi32/service.c
+++ b/dlls/advapi32/service.c
@@ -1766,7 +1766,7 @@ EnumServicesStatusExA(SC_HANDLE hSCManager, SC_ENUM_TYPE InfoLevel, DWORD dwServ
     FIXME("%p level=%d type=%x state=%x %p %x %p %p %p %s\n", hSCManager, InfoLevel,
           dwServiceType, dwServiceState, lpServices, cbBufSize,
           pcbBytesNeeded, lpServicesReturned,  lpResumeHandle, debugstr_a(pszGroupName));
-    *lpServicesReturned = 0;
+    if (lpServicesReturned) *lpServicesReturned = 0;
     SetLastError (ERROR_ACCESS_DENIED);
     return FALSE;
 }