[PATCH 1/2] conhost: Don't create bitmap for hidden windows.

[Jacek Caban]

Fixes performance issues in ConEmu.

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  programs/conhost/window.c | 14 ++++++++++++--
  1 file changed, 12 insertions(+), 2 deletions(-)