fix infinite loop caused by comment regexp in htmltag module #307
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I don't know why comment regexp looks like this:
/<!--([^-]+|[-][^-]+)*-->/, maybe for some specific rules.But I found that
/<!--([^-]+|[-][^-]+)*-->/can't match something like this:<!-- a--z -->, which is obviously a html comment.More importantly, this regexp
/<!--([^-]+|[-][^-]+)*-->/may cause infinite loop and break down the browser.See my issue before.
I positioned the bug, but have no idea why this regexp should cause infinite loop.
I rewrite it to
/<!--[\s\S]*?-->/and make this pull request.