[OpenSIPS-Devel] [OpenSIPS/opensips] ba4d8a: Remove double free on bad input

[Bogdan Andrei IANCU]

  Branch: refs/heads/2.2
  Home:   https://github.com/OpenSIPS/opensips
  Commit: ba4d8a68306f2438d933336265bd96ac20c7d34b
      https://github.com/OpenSIPS/opensips/commit/ba4d8a68306f2438d933336265bd96ac20c7d34b
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2019-02-08 (Fri, 08 Feb 2019)

  Changed paths:
    M modules/mi_json/http_fnc.c

  Log Message:
  -----------
  Remove double free on bad input

Credits for the fix go to @rrb3942
Closes pull request  #1599

(cherry picked from commit eb07ae953c18aa1812579225cece6947c4364590)