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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
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```
```
### 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#L357
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**:
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16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
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```
not relevant
```
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