[OpenSIPS-Devel] [OpenSIPS/opensips] 88607d: Fix branch cancelation after a t_reply()

[Bogdan-Andrei Iancu]

  Branch: refs/heads/2.2
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 88607dbe160cd5cabcce2176c65f41419db52ef3
      https://github.com/OpenSIPS/opensips/commit/88607dbe160cd5cabcce2176c65f41419db52ef3
  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)