xnest doesnt terminal after exit

[cantona <cantona@softhome.net>]

Hi all, 

Just upgrade the newest xnest and x11 from sid...
I found that the xnest is not terminal (ps -ef |grep xnest) after the
xnest session is closed. However the xnest is terminal in previous
version. How come?

ii  xnest          4.3.0.dfsg.1-2 nested X server
12219     1  2 01:04 ?        00:00:00 gdmflexiserver --xnest


Thanks,
cantona