Log Message:
-----------
fixed a minor bug on NULL values
Modified Files:
--------------
pgfouine/include/reporting/reports:
HourlyStatsReport.class.php (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgfouine/pgfouine/include/reporting/reports/HourlyStatsReport.class.php.diff?r1=1.6&r2=1.7)
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