[OpenSIPS-Devel] [OpenSIPS/opensips] d30f39: Fix is_contact_registered() to accept less params.

[Bogdan-Andrei Iancu]

  Branch: refs/heads/2.2
  Home:   https://github.com/OpenSIPS/opensips
  Commit: d30f39a64e6dcbb7a743b394efb9fcbce4e44d63
      https://github.com/OpenSIPS/opensips/commit/d30f39a64e6dcbb7a743b394efb9fcbce4e44d63
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2016-08-19 (Fri, 19 Aug 2016)

  Changed paths:
    M modules/registrar/reg_mod.c

  Log Message:
  -----------
  Fix is_contact_registered() to accept less params.

The last 3 params are optional, so we can invoke the function without them.