[OpenSIPS-Devel] [OpenSIPS/opensips] 9e510b: osp: fix NULL pointer dereference

[Zero King]

  Branch: refs/heads/2.4
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 9e510b72844c6c020153bd5749a8858a7dcf40c7
      https://github.com/OpenSIPS/opensips/commit/9e510b72844c6c020153bd5749a8858a7dcf40c7
  Author: Zero King <l2dy at icloud.com>
  Date:   2020-03-12 (Thu, 12 Mar 2020)

  Changed paths:
    M modules/osp/usage.c

  Log Message:
  -----------
  osp: fix NULL pointer dereference

(cherry picked from commit 4fbb4529ac943c3d18ab8819299a28f3c58f5746)