Re: [PATCH] gc: add git maintenance list command

[Pablo Sabater <pabloosabaterr@gmail.com>]

> char *config_file = NULL;

>	if (config_file) {
>		git_configset_init(&cs);
>		git_configset_add_file(&cs, config_file);
>		if (git_configset_get_string_multi(&cs, key, &list)) {
>			/* No repositories registered in custom config */
>			git_configset_clear(&cs);
>			return 0;
>		}
>	} else {
>		global_config_file = git_global_config();
>		if (!global_config_file)
>			die(_("$HOME not set"));
>		git_configset_init(&cs);
>		git_configset_add_file(&cs, global_config_file);
>		if (git_configset_get_string_multi(&cs, key, &list)) {
>			/* No repositories registered in global config */
>			free(global_config_file);
>			git_configset_clear(&cs);
>			return 0;
>		}
>	}

Here the branches look too similar, after the third line at the else it becomes
exactly the same. If you notice, global_config_file is initialized as NULL
then in case of !config_file, its value comes from git_global_config().
Anyways, there's no need to separate the free logic because both NULL and
git_global_config() can be freed.

you can avoid this by extracting the diferent logic from the else

  if (!config_file) {
      config_file = git_global_config();
      if (!config_file)
          die(_("$HOME not set"));
      global_config_file = config_file;
  }

and then the rest of the code is common for both cases

  git_configset_init(&cs);
  git_configset_add_file(&cs, config_file);
  if (git_configset_get_string_multi(&cs, key, &list)) {
      free(global_config_file);
      git_configset_clear(&cs);
      return 0;
  }