Fix strategy implementation

I've recently experienced some issues with adapter strategy due to the following commit
https://github.com/alchemy-fr/Zippy/commit/d4b656bab21e46cd09a34cd981712cf1f08138d8 as it introduced exception in binary adapter constructor. 
When we test test the different strategies and one of the inflator or deflator binaries is not found, the exception is raised but never catched so the following defined strategies could not be runned.