Fix HellsBells distribution

FightSystem_Main/src/de/steamwar/fightsystem/event/HellsBells.java

@@ -114,7 +114,7 @@ public class HellsBells {
 
 	private int getStart(int regionSize, int length) {
 		double randomNumber = (random.nextDouble() - random.nextDouble()) / 2 + 0.5;
-		return (int) (randomNumber * (regionSize - length));
+		return Math.max(Math.min((int) (randomNumber * (regionSize - length)), regionSize - length), 0);
 	}
 
 	private int getHeightStart() {