bug#72547: [PATCH 4/9] filesys.c: Fix readlink for ports on Darwin.

Tomas Volf <[email protected]> skribis:

> +#elif HAVE_FREADLINK
> +  /* There is no branch in s_scm_readlink that would lead to having both fd and
> +   * non-empty c_path.  Therefore if fd is set, we (on Darwin only) use
> +   * freadlink and ignore the c_path.  On linux this case is already handled by
> +   * readlinkat, but Darwin does not understand empty c_path to mean "the fd
> +   * itself" the way Linux does. */

Removed the leading stars on continuation lines, for styling
consistency.