mknod patch for stat-macros.h

[Paul Eggert]

I installed the following similar patch for mknod.  It's a bit of a
special case since it uses S_IFBLK and S_IFCHR directly, and these
aren't guaranteed by POSIX.  But the S_ISFIFO test can be removed.

2006-08-28  Paul Eggert  <address@hidden>

        * src/mknod.c (main): Don't test whether macros like
        S_ISLNK are defined, since they're always defined now.

--- src/mknod.c.~1.93.~ 2006-07-16 20:11:01.000000000 -0700
+++ src/mknod.c 2006-08-28 17:30:18.000000000 -0700
@@ -208,12 +208,8 @@ main (int argc, char **argv)
       break;
 
     case 'p':                  /* `pipe' */
-#ifndef S_ISFIFO
-      error (EXIT_FAILURE, 0, _("fifo files not supported"));
-#else
       if (mkfifo (argv[optind], newmode) != 0)
        error (EXIT_FAILURE, errno, "%s", quote (argv[optind]));
-#endif
       break;
 
     default: