[dev] Small patch for PGP

[Chuck Hagenbuch]

Quoting Andreas Dahlén <andreas@dahlen.ws>:

> I found a little bug when you attches a your public PGP key.
> To get the public key $imp_pgp->getPersonalPublicKey() is used. 
> Since this code is outside the first if use_pgp section the 
> variable $imp_pgp isn't defined.

Committed, thanks!

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"A dream which helps you to live your reality with dignity
 and justice is a good dream." - Tariq Ramadan