Occasional crash on disconnect

Thread 1 "hl2_linux" received signal SIGSEGV, Segmentation fault.
0xe9ad650e in ClientModeShared::LevelShutdown (this=0xea5d1e20 <GetClientModeNormal()::g_ClientModeNormal>) at /home/ubuntu/repos/synergy/source/game/client/clientmode_shared.cpp:941
941			m_pChatElement->LevelShutdown();