Patch for pdb_mysql and pdb_pgsql

[Florian Effenberger]

Good morning everyone,

> If you hadn't mentioned it, I wouldn't have seen the tiny difference myself.
> Instead of nr.1399 I used a version I wrote before I had found Peter's
> patch. Anyway, Peter's version safes a few dereference operations so I
> attached a new patch to this mail with it.
> Agreed?

sounds great! Peter, could you look over it, please?

Thanks! ;)
Florian