Fix the bug of showing '1/1' of 'Subtest Pass Rate' when the result of the reftest(or manual test) is not 'PASS'.
Fix the bug of showing '1/1' of 'Subtest Pass Rate' when
the result of the reftest(or manual test) is not 'PASS'.

kaixinjxq/wpt-tools,wpt-on-tv-tf/wpt-tools,kaixinjxq/wpt-tools,frewsxcv/wpt-tools,wpt-on-tv-tf/wpt-tools,wpt-on-tv-tf/wpt-tools,kaixinjxq/wpt-tools,UprootStaging/wpt-tools,UprootStaging/wpt-tools,UprootStaging/wpt-tools,vivliostyle/wpt-tools,frewsxcv/wpt-tools,vivliostyle/wpt-tools,vivliostyle/wpt-tools,frewsxcv/wpt-tools