[sr-dev] [kamailio/kamailio] dispatcher: Log dest sets after variable update (#2608)

[Marat]

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#### Description
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I found that zero servers are being logged, even though they are (ignore the line numbers, the file is slightly modified):
```
 0(15681) DEBUG: dispatcher [dispatch.c:919]: ds_load_list(): found [0] dest sets
 0(15681) DEBUG: dispatcher [dispatch.c:222]: ds_log_dst_cb(): dst>> 1031 sip:127.0.0.1:5182 0 0 (,0,0,0)
 0(15681) DEBUG: dispatcher [dispatch.c:222]: ds_log_dst_cb(): dst>> 1011 sip:127.0.0.1:5180 0 0 (,0,0,0)
 0(15681) DEBUG: dispatcher [dispatch.c:222]: ds_log_dst_cb(): dst>> 1021 sip:127.0.0.1:5181 0 0 (,0,0,0)
```
Therefore, I moved the logging of the dest sets after updating variable and this fixed the error.
You can view, comment on, or merge this pull request online at:

  https://github.com/kamailio/kamailio/pull/2608

-- Commit Summary --

  * dispatcher: Log dest sets after variable update

-- File Changes --

    M src/modules/dispatcher/dispatch.c (8)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/2608.patch
https://github.com/kamailio/kamailio/pull/2608.diff

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