Changes the size of the stream using IStream::SetSize.
_StreamSetSize(ByRef $oStream, $iNewSize)
| $oStream | IStream COM object. |
| $iNewSize | New size of the stream in bytes. |
| Success: | 1 |
| Failure: | 0, sets @error to: 1 - Invalid stream object. 2 - COM error (HRESULT in @extended). |