[khornicek] 46112: [SHELL32] - according to msdn ppidl should be set to NULL if an error occurs - fixes shlfolder winetest crash

Author: khornicek
Date: Thu Mar 11 20:42:59 2010
New Revision: 46112
URL: http://svn.reactos.org/svn/reactos?rev=46112&view=rev
Log:
[SHELL32]
- according to msdn ppidl should be set to NULL if an error occurs
- fixes shlfolder winetest crash
Modified:
    trunk/reactos/dll/win32/shell32/shellord.c
Modified: trunk/reactos/dll/win32/shell32/shellord.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/shell32/shellord…
==============================================================================
--- trunk/reactos/dll/win32/shell32/shellord.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/shell32/shellord.c [iso-8859-1] Thu Mar 11 20:42:59 2010
@@ -2244,12 +2244,21 @@
     HRESULT         hr=E_FAIL;
     ULONG           dwAttr=sfgaoIn;
-    if (!pszName || !ppidl || !psfgaoOut)
+    if(!ppidl)
         return E_INVALIDARG;
+
+    if (!pszName || !psfgaoOut)
+    {
+        *ppidl = NULL;
+        return E_INVALIDARG;
+    }
     hr = SHGetDesktopFolder(&psfDesktop);
     if (FAILED(hr))
+    {
+        *ppidl = NULL;
         return hr;
+    }
     hr = IShellFolder_ParseDisplayName(psfDesktop, (HWND)NULL, pbc, (LPOLESTR)pszName,
(ULONG *)NULL, ppidl, &dwAttr);
@@ -2257,6 +2266,8 @@
     if (SUCCEEDED(hr))
         *psfgaoOut = dwAttr;
+    else
+        *ppidl = NULL;
     return hr;
 }