correctly handle zero clients

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1676 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

scripts/multiple-clients.sh

@@ -50,7 +50,9 @@ else
 fi
 
 # Run $NWIN clients in a new tmux session.
+if [ $NWIN -ge 1 ]; then
 	$TMUX new-session -s $SESSION -d "$COMMAND"
+fi
 for i in $(seq 1 $(($NWIN-1)))
 do
 	$TMUX new-session -t $SESSION -d \; split-window -h "$COMMAND"