More concise ip_to_rbl function

diff --git a/src/plugins/lua/rbl.lua b/src/plugins/lua/rbl.lua
index 2a395256f37059e257486bd04faab8323fde6073..9c577e814852bfbbd914e20c0a2a535e98ab836a 100644 (file)
--- a/src/plugins/lua/rbl.lua
+++ b/src/plugins/lua/rbl.lua
@@ -17,14 +17,7 @@
 local rbls = {}
 
 local function ip_to_rbl(ip, rbl)
-       octets = ip:inversed_str_octets()
-       local str = ''
-       for _,o in ipairs(octets) do
-               str = str .. o .. '.'
-       end
-       str = str .. rbl
-
-       return str
+       return table.concat(ip:inversed_str_octets(), ".") .. '.' .. rbl
 end
 
 local function rbl_cb (task)