Fix: cozylights shutdown

mods/cozylights/init.lua

@@ -597,6 +597,9 @@ minetest.register_globalstep(function(dtime)
 		else
 			for _,cozyplayer in pairs(cozylights.cozyplayers) do
 				local player = minetest.get_player_by_name(cozyplayer.name)
+				if not player == nil then 
+					goto next_player
+				end
 				local pos = vector.round(player:getpos())
 				pos.y = pos.y + 1
 				-- simple hash, collision will result in a rare minor barely noticeable glitch if a user teleports: