loplugin:redundantcast (clang-cl)

Change-Id: Ie36853231d58fdf985c32497732abe34f7828d7b
Reviewed-on: https://gerrit.libreoffice.org/46201Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

fpicker/source/win32/folderpicker/MtaFop.cxx

@@ -704,7 +704,7 @@ ATOM SAL_CALL CMtaFolderPicker::RegisterStaRequestWindowClass( )
 
         wcex.cbSize         = sizeof(wcex);
         wcex.style          = 0;
-        wcex.lpfnWndProc    = static_cast< WNDPROC >( CMtaFolderPicker::StaWndProc );
+        wcex.lpfnWndProc    = CMtaFolderPicker::StaWndProc;
         wcex.cbClsExtra     = 0;
         wcex.cbWndExtra     = 0;
         wcex.hInstance      = m_hInstance;