Fix some warnings.

worldedit/serialization.lua

@@ -199,7 +199,7 @@ worldedit.allocate_with_nodes = function(origin_pos, nodes)
 	local pos2x, pos2y, pos2z = -huge, -huge, -huge
 	local origin_x, origin_y, origin_z = origin_pos.x, origin_pos.y, origin_pos.z
 	for i, entry in ipairs(nodes) do
-		x, y, z = origin_x + entry.x, origin_y + entry.y, origin_z + entry.z
+		local x, y, z = origin_x + entry.x, origin_y + entry.y, origin_z + entry.z
 		if x < pos1x then pos1x = x end
 		if y < pos1y then pos1y = y end
 		if z < pos1z then pos1z = z end

worldedit_commands/init.lua

@@ -13,7 +13,7 @@ if minetest.place_schematic then
 end
 
 dofile(minetest.get_modpath("worldedit_commands") .. "/mark.lua")
-dofile(minetest.get_modpath("worldedit_commands") .. "/safe.lua")
+dofile(minetest.get_modpath("worldedit_commands") .. "/safe.lua"); safe_region = safe_region or function(callback) return callback end
 
 local get_position = function(name) --position 1 retrieval function for when not using `safe_region`
 	local pos1 = worldedit.pos1[name]
@@ -828,7 +828,7 @@ minetest.register_chatcommand("/suppress", {
 		local node = get_node(name, param)
 		local count = worldedit.suppress(worldedit.pos1[name], worldedit.pos2[name], node)
 		worldedit.player_notify(name, count .. " nodes suppressed")
-	end, check_set),
+	end, check_region),
 })
 
 minetest.register_chatcommand("/highlight", {
@@ -839,7 +839,7 @@ minetest.register_chatcommand("/highlight", {
 		local node = get_node(name, param)
 		local count = worldedit.highlight(worldedit.pos1[name], worldedit.pos2[name], node)
 		worldedit.player_notify(name, count .. " nodes highlighted")
-	end, check_set),
+	end, check_region),
 })
 
 minetest.register_chatcommand("/restore", {