Temporary fix for world not locking chunkmap in TickMobs.
Temporary fix for world not locking chunkmap in TickMobs.

Reported as #283; this is a hotfix only.

nevercast/cuberite,mc-server/MCServer,mjssw/cuberite,kevinr/cuberite,jammet/MCServer,marvinkopf/cuberite,Howaner/MCServer,Tri125/MCServer,mc-server/MCServer,nichwall/cuberite,Haxi52/cuberite,nicodinh/cuberite,nevercast/cuberite,nevercast/cuberite,jammet/MCServer,birkett/MCServer,MuhammadWang/MCServer,mjssw/cuberite,marvinkopf/cuberite,SamOatesPlugins/cuberite,electromatter/cuberite,Howaner/MCServer,SamOatesPlugins/cuberite,SamOatesPlugins/cuberite,johnsoch/cuberite,johnsoch/cuberite,Fighter19/cuberite,kevinr/cuberite,nounoursheureux/MCServer,kevinr/cuberite,Haxi52/cuberite,MuhammadWang/MCServer,zackp30/cuberite,Fighter19/cuberite,mmdk95/cuberite,nicodinh/cuberite,birkett/cuberite,nichwall/cuberite,jammet/MCServer,Frownigami1/cuberite,SamOatesPlugins/cuberite,linnemannr/MCServer,zackp30/cuberite,QUSpilPrgm/cuberite,Schwertspize/cuberite,bendl/cuberite,mjssw/cuberite,Tri125/MCServer,Altenius/cuberite,mmdk95/cuberite,birkett/cuberite,johnsoch/cuberite,marvinkopf/cuberite,nevercast/cuberite,QUSpilPrgm/cuberite,tonibm19/cuberite,thetaeo/cuberite,marvinkopf/cuberite,ionux/MCServer,nicodinh/cuberite,linnemannr/MCServer,birkett/MCServer,guijun/MCServer,Schwertspize/cuberite,Frownigami1/cuberite,linnemannr/MCServer,Howaner/MCServer,Howaner/MCServer,nounoursheureux/MCServer,HelenaKitty/EbooMC,zackp30/cuberite,mjssw/cuberite,mmdk95/cuberite,Schwertspize/cuberite,ionux/MCServer,thetaeo/cuberite,Fighter19/cuberite,MuhammadWang/MCServer,HelenaKitty/EbooMC,Altenius/cuberite,guijun/MCServer,Tri125/MCServer,thetaeo/cuberite,zackp30/cuberite,ionux/MCServer,electromatter/cuberite,Fighter19/cuberite,Altenius/cuberite,birkett/cuberite,MuhammadWang/MCServer,nounoursheureux/MCServer,tonibm19/cuberite,jammet/MCServer,thetaeo/cuberite,Schwertspize/cuberite,Altenius/cuberite,birkett/MCServer,nichwall/cuberite,QUSpilPrgm/cuberite,electromatter/cuberite,marvinkopf/cuberite,kevinr/cuberite,nevercast/cuberite,Fighter19/cuberite,QUSpilPrgm/cuberite,Haxi52/cuberite,Haxi52/cuberite,electromatter/cuberite,MuhammadWang/MCServer,electromatter/cuberite,mmdk95/cuberite,nichwall/cuberite,guijun/MCServer,johnsoch/cuberite,mc-server/MCServer,Howaner/MCServer,bendl/cuberite,nounoursheureux/MCServer,bendl/cuberite,ionux/MCServer,kevinr/cuberite,HelenaKitty/EbooMC,electromatter/cuberite,mjssw/cuberite,jammet/MCServer,linnemannr/MCServer,nevercast/cuberite,tonibm19/cuberite,mmdk95/cuberite,nounoursheureux/MCServer,QUSpilPrgm/cuberite,nichwall/cuberite,birkett/MCServer,zackp30/cuberite,linnemannr/MCServer,Fighter19/cuberite,Frownigami1/cuberite,mc-server/MCServer,Tri125/MCServer,birkett/MCServer,nicodinh/cuberite,johnsoch/cuberite,linnemannr/MCServer,SamOatesPlugins/cuberite,thetaeo/cuberite,tonibm19/cuberite,nicodinh/cuberite,Altenius/cuberite,Frownigami1/cuberite,Tri125/MCServer,birkett/cuberite,nicodinh/cuberite,Frownigami1/cuberite,thetaeo/cuberite,bendl/cuberite,tonibm19/cuberite,nounoursheureux/MCServer,HelenaKitty/EbooMC,birkett/cuberite,birkett/cuberite,bendl/cuberite,Schwertspize/cuberite,zackp30/cuberite,tonibm19/cuberite,marvinkopf/cuberite,jammet/MCServer,nichwall/cuberite,ionux/MCServer,birkett/MCServer,mmdk95/cuberite,guijun/MCServer,guijun/MCServer,mc-server/MCServer,mc-server/MCServer,ionux/MCServer,HelenaKitty/EbooMC,guijun/MCServer,mjssw/cuberite,Haxi52/cuberite,Howaner/MCServer,Tri125/MCServer,Haxi52/cuberite,QUSpilPrgm/cuberite,kevinr/cuberite