[sr-dev] [kamailio/kamailio] topos and dialog timeout conflict (#1216)

[dryvoip]

### Description

When topos is loaded and dialog is configured to timeout a call by sending BYE to each side, the Route: header is lost and one of the BYEs is not sent to the correct destination.

This problem does not exist when topos is not loaded.

### Troubleshooting

#### Reproduction
```
modparam("dialog", "rr_param", "dv")
modparam("dialog", "profiles_with_value", "inbound_call ; outbound_call; timed_call")
modparam("dialog", "dlg_match_mode", 1)
modparam("dialog", "dlg_flag", 4)
modparam("dialog", "send_bye", 1)
modparam("dialog", "timer_procs", 1)
modparam("dialog", "timeout_noreset", 1)
modparam("dialog", "default_timeout", 43200)

$avp(limit) = 15;
dlg_manage();
dlg_set_timeout_by_profile("timed_call", "1", "$avp(limit)");
dlg_set_timeout($avp(limit));
set_dlg_profile("timed_call", "1");
```
#### Log Messages

```
Aug 14 11:06:28 x /usr/sbin/kamailio[11925]: WARNING: dialog [dlg_req_within.c:216]: bye_reply_cb(): inconsitent dlg timer data on dlg 0x7fe5e0b162f8 [438:1408] with clid 'fPBP01fpFOA5Lq6aVwtZ6Q..' and tags '9f514a4f' 'as6e1fd9bc'
Aug 14 11:06:28 x /usr/sbin/kamailio[11925]: NOTICE: acc [acc_cdr.c:352]: log_write_cdr(): start_time=1502733971.701; end_time=1502733988.052; duration=16.351
Aug 14 11:06:28 x /usr/sbin/kamailio[11925]: WARNING: acc [acc_cdr.c:219]: db_write_cdr(): fallback to dlg_only search because of message doesn't exist.

```

#### SIP Traffic

Good bye (without topos loaded)
```
2017-08-14 10:06:29 -0800 : 10.10.10.180:5060 -> 10.10.10.177:5065

BYE sip:2505551234 at 10.20.20.224:5060 SIP/2.0
Via: SIP/2.0/UDP 10.10.10.180;branch=z9hG4bKbe16.c8c401b7000000000000000000000000.0
To: <sip:2505551234 at mtl.dryvoip.ca;transport=UDP>;tag=as6e1fd9bc
From: <sip:1715033_123 at mtl.dryvoip.ca;transport=UDP>;tag=9f514a4f
CSeq: 3 BYE
Call-ID: fPBP01fpFOA5Lq6aVwtZ6Q..
Route: <sip:10.10.10.177:5065;lr=on>
Content-Length: 0
User-Agent: kamailio (5.0.2 (x86_64/linux))
Max-Forwards: 70
```

Bad bye (with topos loaded)
```
2017-08-14 09:50:35 -0800 : 10.10.10.180:5060 -> 10.20.20.224:5060

BYE sip:2505551234 at 10.20.20.224:5060 SIP/2.0
Via: SIP/2.0/UDP 10.10.10.180;branch=z9hG4bK2409.87c78083000000000000000000000000.0
To: <sip:2505551234 at mtl.dryvoip.ca;transport=UDP>;tag=as574ee653
From: <sip:1715033_123 at mtl.dryvoip.ca;transport=UDP>;tag=df42e302
CSeq: 3 BYE
Call-ID: s1A7v71pjL_HNxHBscGpSg..
Content-Length: 0
User-Agent: kamailio (5.0.2 (x86_64/linux))
Max-Forwards: 70
```
### Possible Solutions

### Additional Information

```
version: kamailio 5.0.2 (x86_64/linux)
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown
compiled on 12:04:13 Jun 26 2017 with gcc 4.4.7
```

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https://github.com/kamailio/kamailio/issues/1216
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