[OpenSIPS-Devel] [OpenSIPS/opensips] e12572: Return <null> value for missing AVPS.

[Bogdan-Andrei Iancu]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: e1257269bcc30df56dd9b6bc90a243c5839d5922
      https://github.com/OpenSIPS/opensips/commit/e1257269bcc30df56dd9b6bc90a243c5839d5922
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2015-12-04 (Fri, 04 Dec 2015)

  Changed paths:
    M modules/avpops/avpops_db.c

  Log Message:
  -----------
  Return <null> value for missing AVPS.

Maintain database result integrity by supporting null column values.
Closes #693 and #677

(cherry picked from commit 88bd36bd8b200bfde902f2bb28c2be8ea0fb18f7)