cron: fixed cron.run.sh again, broken functionality at previous commit

Broken commit here:
http://git.opensde.net/opensde/package-nopast/commit/?id=96f6c8785341f20efd4e010a6336389a5d2a036b

base/cron/cron.run.sh

@@ -21,7 +21,7 @@ if [ "$1" = "-mail-to-root" ] ; then
 	exit
 fi
 
-x="$( hostname > /dev/null )"
+x="$( hostname 2> /dev/null )"
 echo "Output of the daily cron at ${x:-localhost}."
 echo "Local time is `date | tr -s ' '`."
 echo