[OpenSIPS-Devel] [OpenSIPS/opensips] 8e65aa: pua: Fix several locking & memory access bugs

[Liviu Chircu]

  Branch: refs/heads/2.2
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 8e65aa71b3f18c9654e97a3467a09e13f3261548
      https://github.com/OpenSIPS/opensips/commit/8e65aa71b3f18c9654e97a3467a09e13f3261548
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2017-07-04 (Tue, 04 Jul 2017)

  Changed paths:
    M modules/pua/send_publish.c

  Log Message:
  -----------
  pua: Fix several locking & memory access bugs

Several issues with publ_cback_func():
    * 1 x extra lock release upon breaking "send publish" loop
    * N x extra lock releases inside the loop, per each failed publish
    * invalid memory access on "presentity" ptr after send_publish_int()

(cherry picked from commit 9957ff2d9acc4a2686495b5e2ea43cdc3bb7e3ed)