[InterNetNews/inn] 8f01e8: overview buildconfig: Fix preprocessor syntax

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 8f01e88860a8da8cc69a2e138808d8a450b5e3be
      https://github.com/InterNetNews/inn/commit/8f01e88860a8da8cc69a2e138808d8a450b5e3be
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2021-10-31 (Sun, 31 Oct 2021)

  Changed paths:
    M storage/buildconfig.in

  Log Message:
  -----------
  overview buildconfig: Fix preprocessor syntax

No longer add a leading space (because of header guard).

Add a new line after the inclusion of methods.h and ovinterface.h because
otherwise the build fails if clang-format is run on the generated output.