[OpenSIPS-Devel] [OpenSIPS/opensips] 03e852: Fix branch cancelation after a t_reply()

[Bogdan-Andrei Iancu]

  Branch: refs/heads/2.3
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 03e852be789097a39d7774ac161c7b5a2018946f
      https://github.com/OpenSIPS/opensips/commit/03e852be789097a39d7774ac161c7b5a2018946f
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2018-04-17 (Tue, 17 Apr 2018)

  Changed paths:
    M modules/tm/t_reply.c

  Log Message:
  -----------
  Fix branch cancelation after a t_reply()

Be sure and call which_cancel() only when cancel_uac() is also called, otherwise the cancelling markers may prevent further canceling acttions on the transaction
Credits go to Stepan Pologov @sisoftrg
Fix for #1337

(cherry picked from commit d8ef9f1264f33469340b5961aaf8a76310f5e258)