Re: [sr-dev] [kamailio/kamailio] presence module with in-memory presentity records (#2294)

``` Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f12607da547 in atomic_cmpxchg_int (var=0x8, old=0, new_v=1) at ../../core/mem/../atomic/atomic_x86.h:224 224 ATOMIC_FUNC_CMPXCHG(cmpxchg, "cmpxchgl %2, %1", int , int) (gdb) frame 2 #2 0x00007f12607fe0d0 in update_db_subs_timer_dbnone (no_lock=0) at subscribe.c:2079 2079 lock_get(&subs_htable[i].lock); (gdb) p subs_htable $1 = (shtable_t) 0x0 (gdb) p subs_htable[0] Cannot access memory at address 0x0 (gdb) p shtable_size $2 = 9 (gdb) ```