implement _IO_feof_unlocked and _IO_ferror_unlocked in libio.h [PATCH]

[kaliber]

commit 359d499fd541d6eb43b42ac96c16a008e0d436bc
Author: Grzegorz Dabrowski <grzegorz.dabrowski@gmail.com>
Date:   Sun Nov 2 14:42:36 2008 +0100

    implemented _IO_feof_unlocked and _IO_ferror_unlocked

diff --git a/headers/posix/libio.h b/headers/posix/libio.h
index 83caf1d..f284aec 100644
--- a/headers/posix/libio.h
+++ b/headers/posix/libio.h
@@ -170,9 +170,9 @@ extern "C" {
 #endif
 
 extern int _IO_feof(_IO_FILE *stream);
-extern int _IO_feof_unlocked(_IO_FILE *stream);
+#define    _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
 extern int _IO_ferror(_IO_FILE *stream);
-extern int _IO_ferror_unlocked(_IO_FILE *stream);
+#define    _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)
 extern int _IO_putc(int c, _IO_FILE *stream);
 extern int _IO_putc_unlocked(int c, _IO_FILE *stream);
 extern int _IO_getc(_IO_FILE *stream);