From ce64e0d055a35ddb26c5962878ad29e7b37d7640 Mon Sep 17 00:00:00 2001
From: Paul Vriens <paul.vriens.wine@gmail.com>
Date: Thu, 21 Aug 2008 17:17:52 +0200
Subject: [PATCH] advapi32: Prevent a crash when passing an allowed NULL
 parameter.

---
 dlls/advapi32/service.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/advapi32/service.c b/dlls/advapi32/service.c
index 45666ab9b31..d5a2c31fe80 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;
 }