dsnap-sync: correct handling multiple users while using notify

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

bin/dsnap-sync

@@ -874,7 +874,7 @@ get_snapper_sync_id () {
 notify () {
     # estimation: batch calls should just log
     if [ $donotify -gt 0 ]; then
-	for u in $(users | sed 's/ /\n/' | sort -u); do
+	for u in $(users | sed 's/ /\n/g' | sort -u); do
 	    sudo -u $u DISPLAY=:0 \
 		 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(sudo -u $u id -u)/bus \
 		 notify-send -a $progname "$progname: $1" "$2" --icon="dialog-$3"