When set_rtpengine_set() config function is called.

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#### Description <!-- Describe your changes in detail --> After calling set_rtpengine_set(), the new set is not set for further rtpengine delete(). This is because active_rtpp_set is set to default_rtpp_set when msg id != current_msg_id (which is set once by set_rtpengine_set())

I've removed the msg id != current_msg_id condition, and initialized active_rtpp_set in mod_init().

Basically tested locally with 2 sets with 1 rtpengine each. You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/2965

-- Commit Summary --

* rtpengine: Fix set selection

-- File Changes --

M src/modules/rtpengine/rtpengine.c (4)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/2965.patch https://github.com/kamailio/kamailio/pull/2965.diff