[PATCH v3] ole32: Obtain stream size regardless of current position

[Micah N Gorrell]

Use STREAM_SEEK_END when attempting to determine the size of a stream
that clipboard data has just been rendered into. This corrects an issue
with Office 2016 where the current position of the stream is 0 while
rendering a target of image/png.

Signed-off-by: Micah N Gorrell 
---
 dlls/ole32/clipboard.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ole32/clipboard.c b/dlls/ole32/clipboard.c
index 0c02d02a65..9df37750a3 100644
--- a/dlls/ole32/clipboard.c
+++ b/dlls/ole32/clipboard.c
@@ -788,7 +788,7 @@ static HRESULT get_data_from_stream(IDataObject *data, FORMATETC *fmt, HGLOBAL *
         if(FAILED(hr)) goto error;

offs.QuadPart = 0;
-        IStream_Seek(med.u.pstm, offs, STREAM_SEEK_CUR, &pos);
+        IStream_Seek(med.u.pstm, offs, STREAM_SEEK_END, &pos);
         IStream_Seek(med.u.pstm, offs, STREAM_SEEK_SET, NULL);
         hr = IStream_CopyTo(med.u.pstm, stm, pos, NULL, NULL);
         ReleaseStgMedium(&med);