[sr-dev] [kamailio/kamailio] registrar: memory leak in xavp_rcd (#1834)

### Description Kamailio 5.1 on Debian - Enabled xavp_rcd in registrar - Shared memory usage keeps growing over time ### Troubleshooting - `mod.stats core all `show a large amount of allocated memory for xavp_new_value that keeps growing over time ` xavp_new_value(94): 48815768` #### Reproduction We have the same symptom on multiple servers #### Log Messages Nothing shown in the log yet. ### Possible Solutions Using reg_fetch_contacts to grab expiry time is an alternative that works. ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.1.4 (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 10:59:52 Jul 3 2018 with gcc 6.3.0 ``` * **Operating System**: ``` Debian 9.7 x86_64 ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1834