$OpenBSD: patch-backend_genesys_low_c,v 1.1 2016/05/18 20:02:27 sthen Exp $

errno.h header is required now that errno is a per-thread variable.
"undefined symbol 'errno'" at runtime with dlopen()'d modules.

--- backend/genesys_low.c.orig	Wed May 18 14:00:59 2016
+++ backend/genesys_low.c	Wed May 18 14:01:20 2016
@@ -1,3 +1,5 @@
+#include <errno.h>
+
 /* sane - Scanner Access Now Easy.
 
    Copyright (C) 2010-2013 Stphane Voltz <stef.dev@free.fr>
