[OpenSIPS-Devel] [OpenSIPS/opensips] 95abb6: async.h: Fix compile warning

[Liviu Chircu]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 95abb68847bbf3edcc3e60bba3683992be037b7d
      https://github.com/OpenSIPS/opensips/commit/95abb68847bbf3edcc3e60bba3683992be037b7d
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2023-05-16 (Tue, 16 May 2023)

  Changed paths:
    M modules/tm/async.h

  Log Message:
  -----------
  async.h: Fix compile warning