### Description

JSON string returned by "kamctl ps" is malformed. It seems it should end with: } but it ends with: ],

#### Reproduction ``` root@lab002139:~# kamctl ps {"jsonrpc":"2.0","result":[{"IDX":0,"PID":19241,"DSC":"main process - attendant"},{"IDX":1,"PID":19243,"DSC":"udp receiver child=0 sock=192.168.2.139:5060"},{"IDX":2,"PID":19244,"DSC":"udp receiver child=1 sock=192.168.2.139:5060"},{"IDX":3,"PID":19245,"DSC":"udp receiver child=2 sock=192.168.2.139:5060"},{"IDX":4,"PID":19246,"DSC":"udp receiver child=3 sock=192.168.2.139:5060"},{"IDX":5,"PID":19247,"DSC":"slow timer"},{"IDX":6,"PID":19248,"DSC":"timer"},{"IDX":7,"PID":19249,"DSC":"secondary timer"},{"IDX":8,"PID":19250,"DSC":"ctl handler"},{"IDX":9,"PID":19251,"DSC":"WEBSOCKET KEEPALIVE"},{"IDX":10,"PID":19252,"DSC":"JSONRPC-S FIFO"},{"IDX":11,"PID":19253,"DSC":"JSONRPC-S DATAGRAM"},{"IDX":12,"PID":19254,"DSC":"tcp receiver (generic) child=0"},{"IDX":13,"PID":19255,"DSC":"tcp receiver (generic) child=1"},{"IDX":14,"PID":19256,"DSC":"tcp receiver (generic) child=2"},{"IDX":15,"PID":19257,"DSC":"tcp receiver (generic) child=3"},{"IDX":16,"PID":19258,"DSC":"tcp main process"}],"id":2027 ], ```

#### Kamailio version: ``` version: kamailio 5.0.0-pre0 (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 07:59:21 Jan 18 2017 with gcc 4.8.2 ```

Kamailio commit tested is this one: ``` commit 7c03340b4b486afaf00b14a6589c13b7165240a0 Merge: 2058e73 d3525cd Author: Daniel-Constantin Mierla miconda@gmail.com Date: Tue Jan 17 17:19:19 2017 +0100

Merge pull request #933 from ffontaine/master

Add kpcre group ```