Map server crash - zone out of an instance zone w/o an instance attached to player

[KnowOne134]

I have:

• [x] searched existing issues (http://github.com/darkstarproject/darkstar/issues/) to see if the issue I am posting has already been addressed or opened by another contributor
• [x] checked the commit log to see if my issue has been resolved since my server was last updated

Client Version (type /ver in game) : 30181205_0

Source Branch (master/stable) : master

Additional Information (Steps to reproduce/Expected behavior) : on a multiserver system, if a player logs into an instance zone or a GM ports to it. Either situation they do not have an instance attached to enitity and when warping from that zone to another it will crash the map. have a crash dump https://www.dropbox.com/s/djqz1zbpynzatht/zone%20no%20instance%20crash.rar?dl=0

[zynjec]

Going to need the executable as well.

[KnowOne134]

link to server exe: https://www.dropbox.com/s/lrhmyk61wz17vf6/DSGame-server_64.rar?dl=0