[OpenSIPS-Devel] [OpenSIPS/opensips] 9800b2: registrars: Fix an edge-case with lookup("r")

[Liviu Chircu]

  Branch: refs/heads/3.1
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 9800b21b4dd43d253246197e240540a4898a3e21
      https://github.com/OpenSIPS/opensips/commit/9800b21b4dd43d253246197e240540a4898a3e21
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2022-11-04 (Fri, 04 Nov 2022)

  Changed paths:
    M lib/reg/lookup.c

  Log Message:
  -----------
  registrars: Fix an edge-case with lookup("r")

This fixes a bug where the registrar library would return
E_LOOKUP_NO_RESULTS upon encountering an AoR with 0 contacts, instead of
continuing to walk the branches and expand the remaining AoRs.

Many thanks to @MayamaTakeshi for a detailed bug report!
Fixes #2917

(cherry picked from commit 9ac7739ef02079a22de6beb776d6a1628a4458cb)


  Commit: 8e17ae3d10ac803bf3555f101db55b8aade5c79d
      https://github.com/OpenSIPS/opensips/commit/8e17ae3d10ac803bf3555f101db55b8aade5c79d
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2022-11-04 (Fri, 04 Nov 2022)

  Changed paths:
    M modules/registrar/test/test.c

  Log Message:
  -----------
  registrar: Add a unit test for lookup("r")

Related to #2917

(cherry picked from commit 02ddcc6cc52e6c27d27870447c4df7a352508a75)


Compare: https://github.com/OpenSIPS/opensips/compare/8aca6740d83b...8e17ae3d10ac