Fix #1746 (make anvils destroy items when falling)

mods/ITEMS/mcl_anvils/init.lua

@@ -276,6 +276,12 @@ local function damage_anvil_by_using(pos)
 end
 
 local function damage_anvil_by_falling(pos, distance)
+	for _,object in pairs(minetest.get_objects_inside_radius(pos, 0.8)) do
+		local entity = object:get_luaentity()
+		if not object:is_player() and entity and entity.name == "__builtin:item" then
+			object:remove()
+		end
+	end
 	local r = math.random(1, 100)
 	if distance > 1 then
 		if r <= (5*distance) then