[html-templates-tests] Replace assert_null and assert_not_null with assert_equals and assert_not_equals. (#442)

Without this change,
html-templates/parsing-html-templates/clearing-the-stack-back-to-a-given-context/clearing-stack-back-to-a-table-body-context.html
and
html-templates/parsing-html-templates/clearing-the-stack-back-to-a-given-context/clearing-stack-back-to-a-table-row-context.html
fails with exceptions.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/442

Received on Friday, 22 November 2013 04:02:03 UTC