Fixed issue with breaking blocks at -1 coordinates
Fixed issue with breaking blocks at -1 coordinates

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