[OpenSIPS-Devel] [OpenSIPS/opensips] 890ca7: Fix pkg mem leak by var spec copying

[Bogdan Andrei IANCU]

  Branch: refs/heads/3.3
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 890ca7d712331a063086efd025e666919d488faf
      https://github.com/OpenSIPS/opensips/commit/890ca7d712331a063086efd025e666919d488faf
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2022-11-14 (Mon, 14 Nov 2022)

  Changed paths:
    M xlog.c

  Log Message:
  -----------
  Fix pkg mem leak by var spec copying

Commit fff57ac introduces a relativly useless memcpy (only for arm32 related). This copy of the var spec leaks the returned buffer containing the value of the spec, as per $dlg_val() - this implementation of the $dlg_val relys on the fact that the same spec will be received all the time, so a re-size-able buffer is attached to it.
So, let's get rif of the culprit memcpy and replace it with a simpler cast, as per 7dc20e471bf89eef0e4586adae26744d38c38c01
Credits and many thanks go to Arto Kuiri for reporting and pin pointing the culprit commit.

(cherry picked from commit f07e90aac92f33d3321d73ed69ca19850b7e10b4)