Fixed one memory leak in descriptor code.

Michael Meskes <meskes@postgresql.org>

Commit: 91411b6105850567b823dd36cc854c0f12cebdd6
Author: Michael Meskes <meskes@postgresql.org>
Date: 2007-06-11T11:52:08Z
Releases: 8.3.0
Fixed one memory leak in descriptor code.
Made sure ecpg deletes output file in case of an error.

Files