udp memory leak

[DBarney]

received udp packet seem to never be freed.

I can use gigs of memory in a few seconds with this example program:

local dgram = require('dgram')

local one = dgram.createSocket('udp4')
one:bind(2000,"127.0.0.1")

local two = dgram.createSocket('udp4')
two:bind(2001,"127.0.0.1")

local echo = function(sock)
    return function(msg, rinfo)
        collectgarbage()
        sock:send("ping", rinfo.port, rinfo.address, function(err)
            if err then
                p('udp send errored',err)
            end
        end)
    end
end

one:on('message',echo(one))
two:on('message',echo(two))

one:send("ping", 2001, "127.0.0.1", function(err)
    if err then
        p('udp send errored',err)
    end
end)

[rphillips]

This should be fixed now... Please attempt with the latest master.