[reSIProcate] ClientInviteSession end() bug?

[Adam Roach]

maodonghu wrote:

>the calling user hangup and resip transition(Terminated); and call onTerminated, at the same time another thread call end(), and result in assert(0).
>

The current implementation of DUM is very fragile with regard to 
threading: it is not safe to call a method on any DUM-related classes 
from a thread other than the one that is running DUM.

We have started work to redesign a new dialog usage manager that is more 
friendly with regard to threads, but it has quite a ways to go before it 
is ready for use.

/a