* error.c: use HAVE_DECL_SYS_NERR instead of platform names.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2423 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/error.c b/error.c
index 65f4ec3745..8d95e4a395 100644
--- a/error.c
+++ b/error.c
@@ -513,7 +513,7 @@ static const syserr_index_entry syserr_index[]= {
 static VALUE *syserr_list;
 #endif
 
-#if !defined(NT) && !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(sys_nerr)
+#if !HAVE_DECL_SYS_NERR
 extern int sys_nerr;
 #endif