prevent uset values when postqueue is empty

diff --git a/charts.d/postfix.chart.sh b/charts.d/postfix.chart.sh
index 0a246da626bf4e5f801121d02402a27ac7b9bc31..3762e822d82222d96ff4fa5e373338bdde8fc1d2 100755 (executable)
--- a/charts.d/postfix.chart.sh
+++ b/charts.d/postfix.chart.sh
@@ -68,6 +68,9 @@ postfix_update() {
        # be very carefull with eval:
        # prepare the script and always egrep at the end the lines that are usefull, so that
        # even if something goes wrong, no other code can be executed
+       postfix_q_emails=0
+       postfix_q_size=0
+       
        eval "`$postfix_postqueue -p |\
                grep "^--" |\
                sed -e "s/-- \([0-9]\+\) Kbytes in \([0-9]\+\) Requests.$/local postfix_q_size=\1\nlocal postfix_q_emails=\2/g" |\