[OpenSIPS-Devel] [OpenSIPS/opensips] 35b855: [acc] fixed missed calls callback registration

[ionutrazvanionita]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 35b855f8551f56989c31b31167ed3c77e058cf0b
      https://github.com/OpenSIPS/opensips/commit/35b855f8551f56989c31b31167ed3c77e058cf0b
  Author: ionutrazvanionita <ionutionita at opensips.org>
  Date:   2016-09-23 (Fri, 23 Sep 2016)

  Changed paths:
    M modules/acc/acc_logic.c
    M modules/acc/acc_logic.h

  Log Message:
  -----------
  [acc] fixed missed calls callback registration

If the missed calls callback was not registered the first time
do_accounting was called then it wouldn't have been registered
thereafter. A new internal flag was defined to know wheteher or
not the callback has been registered before the current
do_accounting call.