Accepts fonts that are not to add 0-padding at the final table.
Accepts fonts that are not to add 0-padding at the final table.

Some fonts automatically generated by a font generator, called TTX, 
seems to not to add 0-padding to the final table so OTS will reject 
these fonts. The table should be 0-padded, but it would be OK to accept 
these fonts. This change makes OTS accept such fonts. 

BUG=47960
TEST=Follow the steps described in the issue and make sure the web page is rendered using the Takao font.

a19810227/ots,a19810227/ots,jgedler/ots,jgedler/ots,a19810227/ots,jgedler/ots