[OpenSIPS-Devel] [OpenSIPS/opensips] 6011de: Fix gcc warning

[Liviu Chircu]

  Branch: refs/heads/3.1
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 6011de52d0d359856b71ae50bab4e7167a741e02
      https://github.com/OpenSIPS/opensips/commit/6011de52d0d359856b71ae50bab4e7167a741e02
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2020-10-27 (Tue, 27 Oct 2020)

  Changed paths:
    M lib/reg/pn.c

  Log Message:
  -----------
  Fix gcc warning

(cherry picked from commit 4755826f7318a7e6e036a86aa28d7983a87bdbd6)