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#### Checklist: <!-- Go over all points below, and after creating the PR, tick the checkboxes that apply --> - [ ] PR should be backported to stable branches - [x ] Tested changes locally - [x ] Related to issue #4257

#### Description When the dispatcher module sends ping requests then these requests are executed in a dedicated process, which handles timers and called `slow timer`. If during this ping request AVP variables are allocated, then these vars are allocated within `slow timer` process and this memory is never released and continiously accumulates in/by this process. This change makes AVP vars being reset for every iteration of the `dispatcher` timer procedure (`ds_check_timer` function).

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/4258

-- Commit Summary --

* dispatcher: fixed memory leak when avp is indirectly used

-- File Changes --

M src/modules/dispatcher/dispatch.c (1)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/4258.patch https://github.com/kamailio/kamailio/pull/4258.diff