Reuse found lexer in SyntaxHighlightFilter

[JuanitoFatas]

This Pull Request:

• Pass down the found lexer so we do not need to find that lexer again in Rouge.highlight
  - Remove text = node.inner_text local variable assignment since no one use it later on.

[gjtorikian]

Nice, thank you!

I think text = node.inner_text should remain, though, just because it makes sense to have it remain a little more explicit. What do you think?

[JuanitoFatas]

Thanks for the review. I agree with you that explicit is good, updated in 79d12b9.

[gjtorikian]

Thanks!