libs/sys/iptparser: import required functions

diff --git a/libs/sys/luasrc/sys/iptparser.lua b/libs/sys/luasrc/sys/iptparser.lua
index 484a16fbccd3de889c8e5e127b69f008ffbad304..a1d0515af5595ead1468d3dd28a689e702ed5339 100644 (file)
--- a/libs/sys/luasrc/sys/iptparser.lua
+++ b/libs/sys/luasrc/sys/iptparser.lua
@@ -19,6 +19,8 @@ luci.util   = require "luci.util"
 luci.sys    = require "luci.sys"
 luci.ip     = require "luci.ip"
 
+local tonumber, ipairs = tonumber, ipairs
+
 --- LuCI iptables parser and query library
 -- @cstyle     instance
 module("luci.sys.iptparser")
@@ -182,7 +184,7 @@ function IptParser.find( self, args )
 
                -- insert match
                if match == true then
-                       table.insert( rv, rule )
+                       rv[#rv+1] = rule
                end
        end
 
@@ -235,7 +237,7 @@ function IptParser._parse_rules( self )
                                                rule_details["options"][i-10] = rule_parts[i]
                                        end
 
-                                       table.insert( self._rules, rule_details )
+                                       self._rules[#self._rules+1] = rule_details
                                end
                        end
                end