Fix passive mob destruction crashes
Fix passive mob destruction crashes

nounoursheureux/MCServer,tonibm19/cuberite,nounoursheureux/MCServer,Altenius/cuberite,Schwertspize/cuberite,nounoursheureux/MCServer,Frownigami1/cuberite,Schwertspize/cuberite,tonibm19/cuberite,mc-server/MCServer,Altenius/cuberite,johnsoch/cuberite,mc-server/MCServer,Altenius/cuberite,Altenius/cuberite,Frownigami1/cuberite,nounoursheureux/MCServer,marvinkopf/cuberite,QUSpilPrgm/cuberite,kevinr/cuberite,nounoursheureux/MCServer,QUSpilPrgm/cuberite,Schwertspize/cuberite,Schwertspize/cuberite,kevinr/cuberite,QUSpilPrgm/cuberite,johnsoch/cuberite,mc-server/MCServer,QUSpilPrgm/cuberite,mc-server/MCServer,kevinr/cuberite,Altenius/cuberite,marvinkopf/cuberite,mc-server/MCServer,johnsoch/cuberite,Frownigami1/cuberite,johnsoch/cuberite,marvinkopf/cuberite,tonibm19/cuberite,marvinkopf/cuberite,Frownigami1/cuberite,QUSpilPrgm/cuberite,marvinkopf/cuberite,QUSpilPrgm/cuberite,johnsoch/cuberite,kevinr/cuberite,tonibm19/cuberite,Schwertspize/cuberite,mc-server/MCServer,nounoursheureux/MCServer,tonibm19/cuberite,tonibm19/cuberite,Frownigami1/cuberite,kevinr/cuberite,marvinkopf/cuberite,kevinr/cuberite