division by zero

[sinergy]

wordpress occurs a php errormessage: division by zero.

in wp-admin:
options -> reading
blogsite: show the last X entries.

if you set X to 0, you will get:

Warning: Division by zero in /mydir/wp-includes/template-functions-links.php on line 512

it would be nice to receive an userfriendly wordpress message that it is not possible to set the entries to 0.

I reported this error previously at #2693.