Running hakapcap with script to extract files from http results in Segmentation fault(core dumped) error about haka HOT 9 CLOSED

root@System-U14LTS:~/work# tail -20 serdbg.out
debug packet:    dropping packet id=4393214
debug packet:    received packet id=4393215
debug states:    http: leave transition on state 'request'
debug states:    http: finish from state 'request'
debug states:    http: finish transition on state 'request'
alert: id = 3721718
        time = Mon Feb  8 14:45:45 2016
        severity = low
        description = no connection found for tcp packet
        sources = {
                address: 172.24.143.231
                service: tcp/5672
        }
        targets = {
                address: 10.10.30.49
                service: tcp/33752
        }
debug packet:    dropping packet id=4393215
debug packet:    received packet id=4393216  <<<< Here we get the segmentation fault

4393216  66.934873 10.10.192.240 -> 10.17.8.15   DNS 81 Standard query 0xd132 

cmake -DBUILD=Debug <path-to-haka-source>
make localinstall
source out/env.sh
hakapcap

local rem = require("regexp/pcre")
local tcp_connection = require('protocol/tcp_connection')
local http = require('protocol/http')
http.install_tcp_rule(80)
http.install_tcp_rule(8080)
local re1 = rem.re:compile('^.*%.[^%%]+$', rem.re.CASE_INSENSITIVE)
local re2 = rem.re:compile("([^%/.]+)$|([^%/]+)(%.[^%/.]+)$", rem.re.CASE_INSENSITIVE)
haka.rule {
        hook = http.events.receive_data,
        options = {
        streamed = true,
        },
        eval = function (http, iter, dir)
        if http.request ~= nil then
                local split_uri = http.request.split_uri:normalize()
                if re1:match(http.request.uri) then
                        local res, startpos, endpos = re2:match(split_uri.path)
                        filename = string.sub(split_uri.path,startpos+1,endpos)
                        local file = io.open("/root/work/download/" .. filename, "w")
                        for sub in iter:foreach_available() do
                                file:write(sub:asstring())
                        end
                        file:close()
                end
        end
end
}