webalizer: do not parse empty logs

webalizer.sh

@@ -25,13 +25,13 @@ for config in $CONF_DIR/*.conf; do
     }
 
     # rotated, not compressed logfile
-    [ -f ${logfile}.1 ] && {
+    [ -s ${logfile}.1 ] && {
 #       echo ${logfile}.1
         $WEBALIZER -c $config -q ${logfile}.1
     }
 
     # current logfile (as given in config)
-    [ -f ${logfile} ] && {
+    [ -s ${logfile} ] && {
 #        echo $logfile
         $WEBALIZER -c $config -q
     }