Michael Stefaniuc : ole32: Return the buffer pointer when WdtpInterfacePointer_UserMarshal fails.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 514951cc1107c1207875809f802d937b9888f93c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=514951cc1107c1207875809f802d937b9888f93c

Author: Michael Stefaniuc <mstefani at redhat.de>
Date:   Mon Jan 19 11:26:14 2015 +0100

ole32: Return the buffer pointer when WdtpInterfacePointer_UserMarshal fails.

Found by PVS-Studio.

---

 dlls/ole32/tests/usrmarshal.c | 1 +
 dlls/ole32/usrmarshal.c       | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/ole32/tests/usrmarshal.c b/dlls/ole32/tests/usrmarshal.c
index 8bcec74..086760e 100644
--- a/dlls/ole32/tests/usrmarshal.c
+++ b/dlls/ole32/tests/usrmarshal.c
@@ -576,6 +576,7 @@ static void marshal_WdtpInterfacePointer(DWORD umcb_ctx, DWORD ctx)
     ok(size == 0, "size should be 0 bytes, not %d\n", size);
     buffer = HeapAlloc(GetProcessHeap(), 0, size);
     buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, ctx, buffer, unk, &IID_IUnknown);
+    ok(buffer_end == buffer, "buffer_end %p buffer %p\n", buffer_end, buffer);
     HeapFree(GetProcessHeap(), 0, buffer);
 
     /* Now for a non-NULL pointer. The marshalled data are two size DWORDS and then
diff --git a/dlls/ole32/usrmarshal.c b/dlls/ole32/usrmarshal.c
index 9c877b4..6687ac2 100644
--- a/dlls/ole32/usrmarshal.c
+++ b/dlls/ole32/usrmarshal.c
@@ -1641,7 +1641,7 @@ unsigned char * WINAPI WdtpInterfacePointer_UserMarshal(ULONG *pFlags, ULONG Rea
     if(CoMarshalInterface(stm, riid, punk, LOWORD(RealFlags), NULL, MSHLFLAGS_NORMAL) != S_OK)
     {
         IStream_Release(stm);
-        return NULL;
+        return pBuffer;
     }
 
     ALIGN_POINTER(pBuffer, 3);