[FIX] (util): set DATADIR before first being used

util/csbucomparecsfiles.sh

@@ -79,6 +79,9 @@ do
 done
 shift $((${OPTIND} - 1))
 
+DATADIR=$1
+DOWNDIR=$2
+
 MINPARAMS=2
 # check number of commandline arguments
 if [ $# -lt ${MINPARAMS} ]
@@ -105,9 +108,6 @@ then
   exit 2
 fi
 
-DATADIR=$1
-DOWNDIR=$2
-
 if test ! \( -d $DATADIR -a -r $DATADIR \)
 then
   echo data directory $DATADIR does not exits or is not readable