[OpenSIPS-Devel] [OpenSIPS/opensips] 419130: b2b_entities: don't require to_tag if empty

[Răzvan Crainea]

  Branch: refs/heads/3.1
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 4191307c98fa72717749e18ea5b0b00c58cbcffb
      https://github.com/OpenSIPS/opensips/commit/4191307c98fa72717749e18ea5b0b00c58cbcffb
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2021-03-12 (Fri, 12 Mar 2021)

  Changed paths:
    M modules/b2b_entities/b2b_entities.c

  Log Message:
  -----------
  b2b_entities: don't require to_tag if empty

(cherry picked from commit 963d87a932ec2e3eb7d0f3a9567ebd6ad3c93fa2)
(cherry picked from commit 18a106147369312380591912abb10ecf9317874a)