shlwapi: Implement IStream::Stat for registry/memory streams.

dlls/shlwapi/regstream.c

@@ -239,9 +239,24 @@ static HRESULT WINAPI IStream_fnStat (IStream * iface, STATSTG*   pstatstg, DWOR
 {
 	ISHRegStream *This = (ISHRegStream *)iface;
 
-	TRACE("(%p)\n",This);
+	TRACE("(%p, %p, %d)\n",This,pstatstg,grfStatFlag);
+
+	pstatstg->pwcsName = NULL;
+	pstatstg->type = STGTY_STREAM;
+	pstatstg->cbSize.QuadPart = This->dwLength;
+	pstatstg->mtime.dwHighDateTime = 0;
+	pstatstg->mtime.dwLowDateTime = 0;
+	pstatstg->ctime.dwHighDateTime = 0;
+	pstatstg->ctime.dwLowDateTime = 0;
+	pstatstg->atime.dwHighDateTime = 0;
+	pstatstg->atime.dwLowDateTime = 0;
+	pstatstg->grfMode = STGM_READWRITE;
+	pstatstg->grfLocksSupported = 0;
+	pstatstg->clsid = CLSID_NULL;
+	pstatstg->grfStateBits = 0;
+	pstatstg->reserved = 0;
 
-	return E_NOTIMPL;
+	return S_OK;
 }
 
 /*************************************************************************