[Wine-patches] [eter-2.1 1/3] ole32: Add a check for hglobal pointer to GetHGlobalFromStream. (eterbug #10951).

[Dmitry Timoshkov]

---
 dlls/ole32/hglobalstream.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/ole32/hglobalstream.c b/dlls/ole32/hglobalstream.c
index ce0f34c..bea2c96 100644
--- a/dlls/ole32/hglobalstream.c
+++ b/dlls/ole32/hglobalstream.c
@@ -622,10 +622,10 @@ HRESULT WINAPI GetHGlobalFromStream(IStream* pstm, HGLOBAL* phglobal)
 {
   HGLOBALStreamImpl* pStream;
 
-  if (pstm == NULL)
+  if (!pstm || !phglobal)
     return E_INVALIDARG;
 
-  pStream = (HGLOBALStreamImpl*) pstm;
+  pStream = impl_from_IStream(pstm);
 
   /*
    * Verify that the stream object was created with CreateStreamOnHGlobal.
-- 
2.6.5