sfio: remove unused 'S_ISFIFO'

This has seemingly never been used.

Github: #1998

diff --git a/lib/sfio/sfhdr.h b/lib/sfio/sfhdr.h
index d8a4afe81ecaaaba24b56e9b76921a2b654b4c46..745d29e9fd4942a028f02de32e286f9bbece5a88 100644 (file)
--- a/lib/sfio/sfhdr.h
+++ b/lib/sfio/sfhdr.h
@@ -132,9 +132,6 @@ extern "C" {
 #ifndef S_IFCHR
 #define S_IFCHR        0
 #endif
-#ifndef S_IFIFO
-#define S_IFIFO        0
-#endif
 
 #ifndef S_ISDIR
 #define S_ISDIR(m)     (((m)&S_IFMT) == S_IFDIR)
@@ -146,14 +143,6 @@ extern "C" {
 #define S_ISCHR(m)     (((m)&S_IFMT) == S_IFCHR)
 #endif
 
-#ifndef S_ISFIFO
-#      ifdef S_IFIFO
-#              define S_ISFIFO(m)      (((m)&S_IFMT) == S_IFIFO)
-#      else
-#              define S_ISFIFO(m)      (0)
-#      endif
-#endif
-
 #if defined(S_IRUSR) && defined(S_IWUSR) && defined(S_IRGRP) && defined(S_IWGRP) && defined(S_IROTH) && defined(S_IWOTH)
 #define SF_CREATMODE   (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
 #else