Prevent divide by 0 (#319)

* Prevent divide by 0

Added in a ternary operation so that if it evaluates to 0 it will become 1 instead.

* Change ternary to Math.max

Co-authored-by: DJtheRedstoner <[email protected]>

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Co-authored-by: DJtheRedstoner <[email protected]>

src/enchcracker/cracker/JavaSingleSeedCracker.java

@@ -51,7 +51,7 @@ public void resetCracker() {
 	@Override
 	public void firstInput(int bookshelves, int slot1, int slot2, int slot3) {
 		abortRequested.set(false);
-		final int threadCount = Runtime.getRuntime().availableProcessors() - 1; // always leave one for OS
+		final int threadCount = Math.max(Runtime.getRuntime().availableProcessors() - 1, 1); // always leave one for OS but ensure at least 1 processor is used
 		final int blockSize = Integer.MAX_VALUE / 20 / threadCount - 1;
 		final AtomicInteger seed = new AtomicInteger(Integer.MIN_VALUE);
 		ArrayList<Thread> threads = new ArrayList<>();