Function disconnect_pg_server

contrib/postgres_fdw/connection.c:457–466

* Disconnect any open connection for a connection cache entry. */

 * Disconnect any open connection for a connection cache entry.
 */
static void
disconnect_pg_server(ConnCacheEntry *entry)
{
	if (entry->conn != NULL)
	{
		PQfinish(entry->conn);
		entry->conn = NULL;
		ReleaseExternalFD();
	}
}

/*
 * Return true if the password_required is defined and false for this user