[PATCH 6/8] server: Don't allow orphaned windows in set_parent request.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  dlls/user32/tests/win.c |  3 ---
  dlls/user32/win.c       |  2 +-
  server/window.c         | 10 +++++++++-
  3 files changed, 10 insertions(+), 5 deletions(-)