Allows noscript tags to be interspersed with script tags.

[hbradleyiii]

It is helpful to be able to keep the <noscript> counterpart of a <script> right after its <script> in order to keep the context clear. But, as it stands, this causes every script prior to the <noscript> tag to fail. This fix ignores both <script> and <noscript> at the end of the stack.