form_set_error doesn't accept null for field name

Hi everyone,

I think I've discovered a bug in forward 5.x-1.15. When I'm logged out (i.e., don't have the "administer forward" permission), forward completely ignores the flood control limit I've set on the form.

I traced this down to line 430 of forward.module. By default, it looks like this (abbreviated):

form_set_error(null, variable_get( ... ));

When I change it to this, flood control works properly:

form_set_error('recipients', variable_get( ... ));

I'm not sure why this is happening exactly, perhaps something was changed in form_set_error?

Anyway, I hope this is helpful to someone. If anyone can shed anymore light on this issue, it'll be greatly appreciated. Cheers :)