BETA: Fixed NPE in `TarBeetleSpawn`.

Patch by: d!go
Reported by: FBIagent, d!go, St3eT

git-svn-id: http://svn.l2jdp.com/branches/unstable/L2J_DataPack_BETA@10109 5288da4f-0efc-0310-bd40-8d490a2659fa