running an NMAP port scan on a reverse TCP listener kills it

[bcook-r7]

It seems that if a connection is made, and is shut down between the accept call and the inner loop to dispatch it inside of core/handler/reverse_tcp.rb, we end up breaking out of the accept loop and stop functioning.

E.g.:

./msfconsole -qx 'use exploit/multi/handler; set payload windows/meterpreter/reverse_tcp; set lhost 192.168.56.1; run -j -z'

nmap 192.168.56.1 -p 4444