#22 Login form posted page

[Jean-Francois Brault]

When the user logs in after visiting a page which was
post submitted, the user is redirected to the posted
page, but post info is lost.

Example:

1. VIsit user page
2. Try to send a private message
3. Anonymous user: Error message
4. User tries to log in
5. User comes back to see_sendmessage.php, but no ?id=....