This fixes the GetRawInputData regression introduced with
359ee2ec where the message data couldn't
be read twice, while keeping the overwrite logic it introduced.

This also adds some SetLastError to fix some unit tests todos.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49522Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>