user32: test what FindWindow when window isn't found

[Dmitry Timoshkov]

"Austin English" <austinenglish at gmail.com> wrote:

> Thanks for the comments! Here's an updated patch. Passes in Win2K.

This still doesn't look ok to me (missing SetLastError beforehand,
indentation, spacing, braces). There is no need to add a new test,
just add the SetLastError(0xdeadbeef) call before an existing
FindWindowExA call which is expected to fail and check last error
value later on.

-- 
Dmitry.