Log Message:
-----------
Don't assume PQdb() will return a valid result from a failed connection.
Modified Files:
--------------
pgsql-server/src/bin/pg_dump:
pg_backup_db.c (r1.58 -> r1.59)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/pg_dump/pg_backup_db.c.diff?r1=1.58&r2=1.59)