Fixed leak, found by Claudio. Fixed diagnostics.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57917 65644016-39b1-43b1-bf79-96bc8fe82c15
Renamed aliases.conf to databases.conf as suggested by Dmitry

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@57918 65644016-39b1-43b1-bf79-96bc8fe82c15