[OpenSIPS-Devel] [OpenSIPS/opensips] b90eb0: tracer: use a valid info when tracing messages

[Răzvan Crainea]

  Branch: refs/heads/3.0
  Home:   https://github.com/OpenSIPS/opensips
  Commit: b90eb0da944efa8b6595e0bd48bce1054661fbf9
      https://github.com/OpenSIPS/opensips/commit/b90eb0da944efa8b6595e0bd48bce1054661fbf9
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M modules/tracer/tracer.c

  Log Message:
  -----------
  tracer: use a valid info when tracing messages

This commit prevents a crash when tracing a message without having a
dialog or transaction created.

Thanks go to Konrad Malewski (gitkoyot on GitHub) for reporting this!
Close #1695

(cherry picked from commit 58a1e1bb43fbf4b500cacc3dd595fd7b28cd1922)