From e0acc35a4f60d2641e71593713acfb32cafef751 Mon Sep 17 00:00:00 2001
From: Simon Kuhnle <simon@blarzwurst.de>
Date: Thu, 23 Sep 2010 22:44:49 +0200
Subject: [PATCH] return undef if initiating snmp session fails

---
 upsgraph.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/upsgraph.pl b/upsgraph.pl
index 100c52b..9887d0c 100755
--- a/upsgraph.pl
+++ b/upsgraph.pl
@@ -58,6 +58,7 @@ sub fetch_snmp(@) {
 
 	if (!$session) {
 		print STDERR "session error: $error";
+		return undef;
 	}
 
 	$session->translate(0);
-- 
2.39.5