kernel32/tests: Fix resource leak.

Signed-off-by: Andrey Gusev <andrey.goosev@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/kernel32/tests/thread.c

@@ -1653,6 +1653,7 @@ static WORD get_thread_fpu_cw(void)
     res = CloseHandle(ctx.finished);
     ok(!!res, "Failed to close event handle, last error %#x.\n", GetLastError());
 
+    CloseHandle(thread);
     return ctx.cw;
 }