Fix Quantum Compressor caching a bad recipe and getting stuck (#14)

Fixes #7

- Invalidate cached itemstack and state after failed recipe completion

Author: ALongStringOfNumbers

src/main/java/com/blakebr0/extendedcrafting/tile/TileCompressor.java

@@ -61,14 +61,16 @@ public void update() {
 		boolean mark = false;
 
 		if (!this.getWorld().isRemote) {
-			CompressorRecipe recipe = this.getRecipe();
+			CompressorRecipe recipe = null;
 			ItemStack output = this.getStackInSlot(0);
 			ItemStack input = this.getStackInSlot(1);
 
 			if (!input.isEmpty()) {
 				if (this.materialStack.isEmpty()) {
 					this.materialStack = input.copy();
 					mark = true;
+					//Retrieve new recipe upon non-null item detected
+					recipe = getRecipe();
 				}
 
 				if (!this.inputLimit || (recipe != null && this.materialCount < recipe.getInputCount())) {
@@ -83,6 +85,11 @@ public void update() {
 						mark = true;
 					}
 				}
+				//Invalidate the cached item and marked state on unsuccessful recipe retrieval
+				else if(mark) {
+					this.materialStack = ItemStack.EMPTY;
+					mark = false;
+				}
 			}
 
 			if (recipe != null && this.getEnergy().getEnergyStored() > 0) {