Anvil: Fixed an off-by-one error in the loader.
Anvil: Fixed an off-by-one error in the loader.

Fixes #1307.

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