[OpenSIPS-Devel] [OpenSIPS/opensips] 7646a9: tm: fix avp add error check

[Răzvan Crainea]

  Branch: refs/heads/2.4
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 7646a9edbfb6f3e3adddec307a8df89b1d320e11
      https://github.com/OpenSIPS/opensips/commit/7646a9edbfb6f3e3adddec307a8df89b1d320e11
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M modules/tm/tm.c

  Log Message:
  -----------
  tm: fix avp add error check

(cherry picked from commit abe988a2df61dc8deaae18e9fbfedc12f0c806a7)