From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Thu, 1 Jul 2021 00:24:30 +0000 (-0700)
Subject: remove unnecessary errno declaration
X-Git-Tag: 2.48.0~18^2~9
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f15af3f8a83cf21cc48a0ebc3fcd2caa2d1ffb66;p=graphviz

remove unnecessary errno declaration

The errno variable/macro is part of ISO C.
---

diff --git a/lib/sfio/sfhdr.h b/lib/sfio/sfhdr.h
index 2d8809049..c02483714 100644
--- a/lib/sfio/sfhdr.h
+++ b/lib/sfio/sfhdr.h
@@ -644,10 +644,6 @@ extern "C" {
     extern char *_sfcvt(void *, int, int *, int *, int);
     extern char **_sfgetpath(char *);
 
-#ifndef errno
-    extern int errno;
-#endif
-
 #ifdef _WIN32
 #undef SF_ERROR
 #include <io.h>