Handle should be closed if _endthread is called or thread function
exits. If thread is terminated by ExitThread or _endthreadex, thread
handle remains valid.
Signed-off-by: Paul Gofman <gofmanp@gmail.com>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>