[imp] Logentry on sending mail

[Andreas Dahlén]

Hello!

Everytime I send a mail I get the following in my error_log for 
apache;

[error] PHP Warning:  No file uploaded in Unknown on line 0

I've tested with Horde(2.x)/IMP(3.x) HEAD and RELENG branches and 
apache 4.1.2, 4.2.0RC2, 4.2.0RC4 with the same result.

The messages is sent OK, it´s just annoying to get the entry in 
the logfile. Do I need to accept the entry or is there some 
configuration I missed?

/Andreas