Nikolay Sivov : oleaut32/safearray: Fix allocation error check for array descriptor.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 90090332a25f69674b5ee1808cba09ff0123062f
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=90090332a25f69674b5ee1808cba09ff0123062f

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Fri Jan 14 23:30:17 2011 +0300

oleaut32/safearray: Fix allocation error check for array descriptor.

---

 dlls/oleaut32/safearray.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/dlls/oleaut32/safearray.c b/dlls/oleaut32/safearray.c
index f8f87eb..dd00cfd 100644
--- a/dlls/oleaut32/safearray.c
+++ b/dlls/oleaut32/safearray.c
@@ -172,11 +172,15 @@ static ULONG SAFEARRAY_GetCellCount(const SAFEARRAY *psa)
 /* Allocate a descriptor for an array */
 static HRESULT SAFEARRAY_AllocDescriptor(ULONG ulSize, SAFEARRAY **ppsaOut)
 {
-  *ppsaOut = (SAFEARRAY*)((char*)SAFEARRAY_Malloc(ulSize + SAFEARRAY_HIDDEN_SIZE) + SAFEARRAY_HIDDEN_SIZE);
+  char *ptr = SAFEARRAY_Malloc(ulSize + SAFEARRAY_HIDDEN_SIZE);
 
-  if (!*ppsaOut)
-    return E_UNEXPECTED;
+  if (!ptr)
+  {
+      *ppsaOut = NULL;
+      return E_UNEXPECTED;
+  }
 
+  *ppsaOut = (SAFEARRAY*)(ptr + SAFEARRAY_HIDDEN_SIZE);
   return S_OK;
 }