Merge pull request #1413 from wvogel/patch-1

Fix pdns_rel to always have correct output

plugins/pdns/pdns_rel

@@ -49,6 +49,8 @@ if [ -f "$state_file" ] && [ "$(stat --format=%Y "$state_file")" -gt "$(date --d
         d_queries=$((queries - old_queries))
         if [ $d_queries -gt 0 ] ; then
            echo packetcache_hitrate.value $(( d_hits * 100 / d_queries ))
+        else
+           echo packetcache_hitrate.value 0
         fi
 fi