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### Description BYE transactions keept increasing and were never freed.

#### Reproduction 1. Compile kamailio 5.8.5 and run it under no traffic, with default config 2. Connect 1 WSS client 3. Send INVITE with "Session-Expires" header from WSS client -> kamailio -> PBX (e.g. asterisk) 4. Wait for WSS client to refresh session in re-INVITE with another "Session-Expires" 5. Force kill WSS client and wait 6. PBX (asterisk) will send BYE to end session 7. kamailio replies "477 Unfortunately error on sending to next hop occurred (477/SL)" 8. kamcmd tm.list | grep BYE -> will see that transaction there is never freed

#### Debugging Data + Log Messages ``` DEBUG: tm [h_table.c:415]: build_cell(): created new cell 0x7f673e2552d0 INFO: <script>: [pdn60n9cob1j3j0doi36] MANAGE_BRANCH: New branch [0] to ....., BYE WARNING: tm [../../core/forward.h:217]: msg_send_buffer(): TCP/TLS connection for WebSocket could not be found DEBUG: tm [t_fwd.c:1566]: t_send_branch(): send to 169.132.91.64:1702 (5) failed WARNING: tm [t_fwd.c:1586]: t_send_branch(): sending request on branch 0 failed DEBUG: tm [t_funcs.c:358]: t_relay_to(): t_forward_nonack returned error -1 (-477) DEBUG: tm [t_funcs.c:376]: t_relay_to(): -477 error reply generation delayed DEBUG: sl [sl_funcs.c:564]: sl_run_callbacks(): execute callback for event type 1 ERROR: sl [sl_funcs.c:428]: sl_reply_error(): stateless error reply used: Unfortunately error on sending to next hop occurred (477/SL) DEBUG: dialog [dlg_hash.c:780]: dlg_lookup_mode(): ref dlg 0x7f673e5dbae0 with 1 -> 2 DEBUG: dialog [dlg_hash.c:784]: dlg_lookup_mode(): dialog id=6986 found on entry 2734 DEBUG: dialog [dlg_hash.c:1088]: dlg_unref_helper(): unref op on 0x7f673e5dbae0 with 1 from dlg_hash.c:1106 DEBUG: dialog [dlg_hash.c:1092]: dlg_unref_helper(): unref dlg 0x7f673e5dbae0 with 1 -> 1 ```

#### SIP Traffic

<!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

```


```

### Possible Solutions Tracked this down to this "#ifdef" that is defined inside the C file itself: https://github.com/kamailio/kamailio/blob/master/src/modules/tm/t_funcs.c#L3...

Solution 1: remove all the code related to TM_DELAYED_REPLY since it is anyway local to t_funcs.c file

Solution 2: t_release_transaction(t); /* kill it silently */ in case of TM_DELAYED_REPLY too

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` all up to latest one ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `lsb_release -a` and `uname -a`) -->

``` not relevant ```