[OpenSIPS-Devel] [OpenSIPS/opensips] 2283f3: tracer: fix cases when `trace` was called twice

[Răzvan Crainea]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 2283f31215e30beed56aea4df613fb5e04a7d800
      https://github.com/OpenSIPS/opensips/commit/2283f31215e30beed56aea4df613fb5e04a7d800
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2021-12-22 (Wed, 22 Dec 2021)

  Changed paths:
    M modules/tracer/tracer.c
    M modules/tracer/tracer.h

  Log Message:
  -----------
  tracer: fix cases when `trace` was called twice

Reported by Ovidiu Sas and Giovanni Maruzzelli in #2531