Fix Quantum Compressor not running without item in input

[ALongStringOfNumbers]

Fixes the Quantum Compressor not running without an item in the input slot, even when a catalyst was present and the compressor was at the correct amount of input items to make a singularity.

This was occurring because recipe was being initialized to null, and was only being updated in the !input.isEmpty() if statement, meaning that if there was not anything in the input, the recipe would continue to be null and therefore not progress the output.

This PR changes the order of the update loop slightly, first finding the materialStack if the input was not empty, and then finding the recipe and proceeding on with the update loop. This was done to prevent an infinite failure loop, as if the recipe was simply changed to getRecipe(), it would still return null for 1 tick, as it was called before the materialStack was initialized. This lead to the infinite failure loop due to the materialStack being cleared on invalid recipe.

Now, the materialStack is updated first, meaning that recipe will never be null for 1 tick for valid inputs, and also the recipe finding itself is moved out into the main update loop, to prevent null recipe failures later on if the input was empty.

Closes #19

[Exaxxion]

qc_pr20.mp4

Looks like it fixes the issue to me.