Don't drop sugarcane/cactus in creative

mods/ITEMS/mcl_core/functions.lua

@@ -156,7 +156,9 @@ minetest.register_on_dignode(function(pos, node)
 			local np={x=pos.x, y=pos.y+1, z=pos.z}
 			while minetest.get_node(np).name==timber_nodenames[i] do
 				minetest.remove_node(np)
+				if not minetest.setting_getbool("creative_mode") then
 					minetest.add_item(np, timber_nodenames[i])
+				end
 				np={x=np.x, y=np.y+1, z=np.z}
 			end
 		end