[Vortex] No VortexOnClosedChannel event received at connection initiator

[Wimpie Nortje]

> Are you calling to vortex_channel_set_closed_handler in both sides
> before the connection close happens?
>   
Yes.

I also created two channels. One opened by the originator and one opened 
by the listener. When the connection is broken, the listener gets an 
event for each of the channels, ie it gets two events. The originator 
gets nothing.