[Plugin: CSV User Import] Small fix suggestion

I can see on line 49 in the latest version (1.0.3) that if no email address is present in the .CSV file you are trying to compose a dummy address by combining username with @donotreply.com.

This is not working but with this simple fix it will:
if (!$user_email) { $user_email = $username."@donotreply.com"; }
That´s it!

http://wordpress.org/extend/plugins/csv-user-import/