[OpenSIPS-Devel] [OpenSIPS/opensips] cfcac3: [tm] fix mem leak when passing a proxy to t_relay()

[Bogdan Andrei IANCU]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: cfcac3db3ac1bf614b18eecccd5ec6f58ee1555d
      https://github.com/OpenSIPS/opensips/commit/cfcac3db3ac1bf614b18eecccd5ec6f58ee1555d
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2020-11-12 (Thu, 12 Nov 2020)

  Changed paths:
    M modules/tm/tm.c

  Log Message:
  -----------
  [tm] fix mem leak when passing a proxy to t_relay()

The actual proxy structure needs to be also freed.
Reported by @Sigmast-Michael
Closes #2304

(cherry picked from commit 1cd5d2be2696d72192d07efa388ad1f255c92762)