make non-empty class valid in XHTML1 checking; fix for bug report from Geoffrey Snedders (b=494,r=hsivonen) http://bugzilla.validator.nu/show_bug.cgi?id=494
make non-empty class valid in XHTML1 checking; fix for bug report from Geoffrey Snedders (b=494,r=hsivonen)
http://bugzilla.validator.nu/show_bug.cgi?id=494

--HG--
extra : convert_revision : svn%3Ac6dcca6c-c432-0410-a79e-3fbb6554aff1/trunk%40313

sammuelyee/validator,tripu/validator,takenspc/validator,validator/validator,validator/validator,YOTOV-LIMITED/validator,takenspc/validator,YOTOV-LIMITED/validator,takenspc/validator,tripu/validator,validator/validator,validator/validator,tripu/validator,sammuelyee/validator,takenspc/validator,YOTOV-LIMITED/validator,takenspc/validator,YOTOV-LIMITED/validator,sammuelyee/validator,sammuelyee/validator,tripu/validator,YOTOV-LIMITED/validator,sammuelyee/validator,tripu/validator,validator/validator