Fix assert when clicking blocks at the top of the world.
Fix assert when clicking blocks at the top of the world.

mc-server/MCServer,mc-server/MCServer,mc-server/MCServer,mc-server/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,mc-server/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,mc-server/MCServer