From e15ec94de390fb012f5ac5ece9becba913ab1942 Mon Sep 17 00:00:00 2001
From: hexenmeister <hexenmeister@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Thu, 19 Mar 2015 19:37:12 +0000
Subject: [PATCH] fix: warnings

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@8245 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/42_SYSMON.pm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fhem/FHEM/42_SYSMON.pm b/fhem/FHEM/42_SYSMON.pm
index cb03553d1..02f4f3fd2 100644
--- a/fhem/FHEM/42_SYSMON.pm
+++ b/fhem/FHEM/42_SYSMON.pm
@@ -2390,10 +2390,12 @@ sub SYSMON_getNetworkInfo ($$$)
 
     my $rxRaw = -1;
     my $txRaw = -1;
-    #if(-e "/sys/class/net/$nName/statistics/rx_bytes" && -e "/sys/class/net/$nName/statistics/tx_bytes") {
+    # if(-e "/sys/class/net/$nName/statistics/rx_bytes" && -e "/sys/class/net/$nName/statistics/tx_bytes") {
     if(SYSMON_isNetStatClass($hash, $nName)) {
         $rxRaw = SYSMON_execute($hash, "cat /sys/class/net/$nName/statistics/rx_bytes");
+        $rxRaw = -1 unless defined $rxRaw;
         $txRaw = SYSMON_execute($hash, "cat /sys/class/net/$nName/statistics/tx_bytes");
+        $txRaw = -1 unless defined $txRaw;
     }
     
   if($rxRaw<0||$txRaw<0) {