### Description

dialplan ``dp_match()`` fails with a substitution error when subst_exp doesn't match the string. I was expecting to only match the rule to get the attrs no matter what is defined in ``subst_exp/repl_exp``

### Troubleshooting

#### Reproduction

``` => select * from dialplan where id = 24; ─[ RECORD 1 ]────────────────────────────────────── id │ 24 dpid │ 101000 pr │ 1 match_op │ 1 match_exp │ ^00([1-9][0-35-9]|[1-35-9][0-9])[0-9]+$ match_len │ 0 subst_exp │ ^([1-9][0-9]{8})$ repl_exp │ +34\1 attrs │ cli=+34654205682;action=0 ```

``` route[SET_DST] { if($var(dpid_team)==0){ xdbg("SET_DST no $$var(dpid_team) - ci='$ci'"); return; } xinfo("SET_DST trying to get dialplan from dpid:$var(dpid_team) - ci'$ci'"); if(dp_translate("$(var(dpid_team){s.int})", "$rU/$var(dst)")){ if($rU != $var(dst)){ xinfo("SET_DST change from $$rU:'$rU' to '$var(dst)' - ci='$ci'"); $rU = $var(dst); } } else { xinfo("SET_DST no valid subst_exp for '$rU' trying to match - ci='$ci'"); dp_match("$(var(dpid_team){s.int})", "$rU"); } if($var(dp_attrs)!=0) { xdbg("SET_DST $$var(dp_attrs):$var(dp_attrs) " "action:$(var(dp_attrs){param.value,action}) - ci='$ci'"); $var(action) = $(var(dp_attrs){param.value,action}); if($var(action)=='1'){ xalert("Dialing rule group for '$rU' set to 'deny' - ci='$ci'"); route(ERROR_DEST_DENY); } } return; } ```

``` INFO: <script>: SET_DST trying to get dialplan from dpid:101000 - ci'57f955434e6ca1e57727367e4abcff1f@PBX-2797.xpbx.foehn.co.uk' ERROR: dialplan [dp_repl.c:439]: rule_translate(): the string 0034654205681 matched the match_exp ^00([1-9][0-35-9]|[1-35-9][0-9])[0-9]+$ but not the subst_exp ^([1-9][0-9]{8})$! ERROR: dialplan [dp_repl.c:727]: dp_translate_helper(): could not build the output INFO: <script>: SET_DST no valid subst_exp for '0034654205681' trying to match - ci='57f955434e6ca1e57727367e4abcff1f@PBX-2797.xpbx.foehn.co.uk' ERROR: dialplan [dp_repl.c:439]: rule_translate(): the string 0034654205681 matched the match_exp ^00([1-9][0-35-9]|[1-35-9][0-9])[0-9]+$ but not the subst_exp ^([1-9][0-9]{8})$! ERROR: dialplan [dp_repl.c:727]: dp_translate_helper(): could not build the output ``` ### Additional Information

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

``` version: kamailio 5.2.2 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, 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_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled with gcc 4.8.4 ```