🚀 go-pugleaf

If you don't give cccp (cpp) an output file argument, it won't work.
I noticed this using -M.

Fix:
*** cccp.c.~1~	Fri Oct 14 17:21:40 1988
--- cccp.c	Sat Oct 15 15:22:14 1988
***************
*** 967,973 ****
  
    /* Now that we know the input file is valid, open the output.  */
  
!   if (out_fname && !strcmp (out_fname, ""))
      out_fname = "stdout";
    else if (! freopen (out_fname, "w", stdout))
      pfatal_with_name (out_fname);
--- 967,973 ----
  
    /* Now that we know the input file is valid, open the output.  */
  
!   if (out_fname == 0 || *out_fname == '\0')
      out_fname = "stdout";
    else if (! freopen (out_fname, "w", stdout))
      pfatal_with_name (out_fname);