[OpenSIPS-Devel] [OpenSIPS/opensips] 18ccdb: [tracer] fix bogus multiple tracing

[Bogdan Andrei IANCU]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 18ccdbe0efbf327c88026dd9006513a06dd4a348
      https://github.com/OpenSIPS/opensips/commit/18ccdbe0efbf327c88026dd9006513a06dd4a348
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2023-06-20 (Tue, 20 Jun 2023)

  Changed paths:
    M modules/tracer/tracer.c

  Log Message:
  -----------
  [tracer] fix bogus multiple tracing

When calling the trace() function multiple times from script (to do tracing via different backends), be sure and install all the tracing callbacks (in TM, dialog) only first time.
Reported by @gmaruzz
Closes #3082