Boost generates undefined variables warning during poller run

[jdcoats]

Boost undefined variables outbuf & initial_time

2019/10/04 13:11:26 - CMDPHP PHP ERROR NOTICE Backtrace: (/poller_boost.php[137]:output_rrd_data(), /poller_boost.php[311]:boost_process_local_data_ids(), /poller_boost.php[450]:boost_process_output(), /poller_boost.php[627]:CactiErrorHandler())
2019/10/04 13:11:26 - ERROR PHP NOTICE: Undefined variable: outbuf in file: /var/www/localhost/htdocs/cacti/poller_boost.php on line: 627
2019/10/04 13:11:26 - CMDPHP PHP ERROR NOTICE Backtrace: (/poller_boost.php[137]:output_rrd_data(), /poller_boost.php[311]:boost_process_local_data_ids(), /poller_boost.php[450]:boost_process_output(), /poller_boost.php[638]:CactiErrorHandler())
2019/10/04 13:11:26 - ERROR PHP NOTICE: Undefined variable: initial_time in file: /var/www/localhost/htdocs/cacti/poller_boost.php on line: 638

[jdcoats]

-        $outbut = '';
+        $outbuf = '';