strict_filters no longer working

[rafaelss]

Hi,

I'm trying to update liquid-c in a project that I work on but I noticed that strict_filters is no longer working (perhaps since this commit).

I've created this gist reproducing the problem: https://gist.github.com/rafaelss/5ed21e59ad2cc5d82acf4b089b5697af

Running working.rb raises the exception correctly (fef8329 is the ref I'm currently using in the project), but running not_working.rb does not.

Is there anything I should change to make the most recent commits work correctly?