Corrige les messages de warnings au chargement

- Ces messages concernaient la tentative de création d'alias déjà
  existant pour les blocs ice et snowblock

src/aliases.lua

@@ -29,6 +29,7 @@ minetest.register_alias("cobblesnow", "snow:snow_cobble")
 
 -- To clean up my first stairsplus attempt.
 -- Stair
+--[[
 minetest.register_alias(":default:stair_snowblock", "moreblocks:stair_snowblock")
 minetest.register_alias(":default:stair_snowblock_half", "moreblocks:stair_snowblock_half")
 minetest.register_alias(":default:stair_snowblock_right_half", "moreblocks:stair_snowblock_right_half")
@@ -102,7 +103,7 @@ minetest.register_alias(":default:micro_ice_4", "moreblocks:micro_ice_4")
 minetest.register_alias(":default:micro_ice_12", "moreblocks:micro_ice_12")
 minetest.register_alias(":default:micro_ice_14", "moreblocks:micro_ice_14")
 minetest.register_alias(":default:micro_ice_15", "moreblocks:micro_ice_15")
-
+]]--
 -- If christmas_craft then override his star with this mod one.
 if minetest.get_modpath("christmas_craft") then
 	minetest.register_alias_force("christmas_craft:christmas_star", "snow:star")

src/stairs.lua

@@ -32,8 +32,8 @@ if minetest.get_modpath("moreblocks") and
 		ice_brick   = false,
 		snow_brick  = true,
 		snow_cobble = true,
-		ice = true,
-		snowblock = true,
+		ice = false,
+		snowblock = false,
 	}
 
 	for mod, nodes in pairs(snow_nodes) do