Marcus Meissner : ole32: Check for interface NULL which happens with e.g. Abiword.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 8d25534613198d409ad8f06ca678a91c20c98eba
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=8d25534613198d409ad8f06ca6...

Author: Marcus Meissner <marcus(a)jet.franken.de>
Date:   Thu Sep 16 17:12:33 2010 +0200

ole32: Check for interface NULL which happens with e.g. Abiword.

---

 dlls/ole32/ole2.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/ole32/ole2.c b/dlls/ole32/ole2.c
index a9a4885..84bf174 100644
--- a/dlls/ole32/ole2.c
+++ b/dlls/ole32/ole2.c
@@ -450,7 +450,9 @@ HRESULT WINAPI RegisterDragDrop(HWND hwnd, LPDROPTARGET pDropTarget)
   hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
   if(FAILED(hr)) return hr;
 
+  unk = NULL;
   hr = IDropTarget_QueryInterface(pDropTarget, &IID_IUnknown, (void**)&unk);
+  if (SUCCEEDED(hr) && !unk) hr = E_NOINTERFACE;
   if(FAILED(hr))
   {
       IStream_Release(stream);