Crash while shooting with mage

Fixed in r2395 (part of Beta 10).

While shooting a tree (or a centaur) in Usachioi Mine (map51) with the mage, game crashed with following:

Log: - VPathTraverse::AddThingIntercepts
Log: - VPathTraverse::Init
Log: - RunFunction
Log: - (engine.Thinker.PathTraverse 0)
Log: - RunFunction
Log: - (linespec.EntityEx.AimLineAttack 234)
Log: - RunFunction
Log: - (linespec.EntityEx.Aim 53)
Log: - RunFunction
Log: - (linespec.EntityEx.SpawnPlayerMissileEx 35)
Log: - RunFunction
Log: - (linespec.EntityEx.SpawnPlayerMissile 10)
Log: - RunFunction
Log: - (linespec.HexenWeapon.WA_MissileAttack 31)
Log: - VObject::ExecuteFunction
Log: - (linespec.HexenWeapon.WA_MissileAttack)
Log: - VBasePlayer::SetViewState
Log: - RunFunction
Log: - (engine.BasePlayer.AdvanceViewStates 0)
Log: - RunFunction
Log: - (linespec.PlayerEx.MovePsprites 2)
Log: - RunFunction
Log: - (game.Player.MovePsprites 72)
Log: - RunFunction
Log: - (game.Player.PlayerTick 1192)
Log: - VObject::ExecuteFunction
Log: - (game.Player.PlayerTick)
Log: - SV_RunClients
Log: - SV_Ticker
Log: - ServerFrame
Log: - Host_Frame
Log: Doing C_Shutdown
Log: Doing CL_Shutdown
Log: hero left the game

Log: Doing SV_Shutdown
Log: Doing delete GNet
Log: Doing delete GInput
Log: Doing V_Shutdown
Log: Doing delete GAudio
Log: Doing T_Shutdown
Log: Doing Sys_Shutdown
Log: Doing delete GSoundManager
Log: Doing R_ShutdownTexture
Log: Doing R_ShutdownData
Log: Doing VCommand::Shutdown
Log: Doing VCvar::Shutdown
Log: Doing ShutdownMapInfo
Log: Doing FL_Shutdown
Log: Doing W_Shutdown
Log: Doing GLanguage.FreeData
Log: Doing ShutdownDecorate
Log: Doing VObject::StaticExit
Log: Doing VName::StaticExit
Uninitialised: Doing Z_Shutdown

ERROR: Segmentation Violation