NPE caused by consuming an error from RecipeHelper.getRecipeArray

The null check here: https://github.com/Flow86/Advanced-Recipe-Generator-Mod/blob/master/common/arg/ARG.java#L96 should be moved to outside the try/catch to avoid throwing an NPE in the event something goes wrong.

I had an issue reported in IRC regarding this specific error and MFR, though I wasn't given the forge log.
