[gnome-db] Patch for fixing connection problem in postgresql provider

["David Marín Carreño" <david aspl es>]

I have found a little bug while connecting to databases using gda
postgresql provider, when providing the user and password in the
gda_client_open_connection call: gda didn't give the supplied password to
postgres, and it cannot connect.
The bug is in line 400 in gda-postgres-provider.c

400c400
< 	if (!pq_pwd || pq_pwd != '\0')
---
> 	if (!password || *password == '\0')

Now it works perfectly.

Greetings.
--
David Marín Carreño <david aspl es>
Advanced Software Production Line, S.L.