Bug#1038144: plaintext password get's written to the log in case of a postgres connection failure

[Markus Ziehe <mabezi@agdsn.me>]

Package: pmacct
Version: 1.7.6-2
Severity: important

If pmacct cannot connect to the PostgreSQL database for whatever reason, 
pmacct writes the credentials in plain text to the log.

A bugfix has already been submitted to the official repository on GitHub 
by me as a merge request and accepted.

Now it just needs to be merged into the Debian version in the official 
Debian repositories.

Link to GitHub: https://github.com/pmacct/pmacct/pull/693