[InterNetNews/inn] 738fda: Update rra-c-util with upstream version

[Julien ÉLIE]

  Branch: refs/heads/2.7
  Home:   https://github.com/InterNetNews/inn
  Commit: 738fda35f91b79e15a459069f32613f6fd1bf149
      https://github.com/InterNetNews/inn/commit/738fda35f91b79e15a459069f32613f6fd1bf149
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-01-24 (Tue, 24 Jan 2023)

  Changed paths:
    M tests/tap/process.c

  Log Message:
  -----------
  Update rra-c-util with upstream version

The argv argument shouldn't be NULL, but add an explicit check
since cppcheck wants one.