refactored out dependency

src/engine/mbEnums.java

@@ -35,11 +35,13 @@ import java.util.concurrent.ThreadLocalRandom;
 public class mbEnums {
 
     public static <T extends Enum<T>> long toLong(EnumSet<T> enumSet) {
-        long r = 0;
-        for (T value : enumSet) {
-            r |= 1L << value.ordinal();
-        }
-        return r;
+
+        long bitvector = 0L;
+
+        for (T value : enumSet)
+            bitvector |= 1L << value.ordinal();
+
+        return bitvector;
     }
 
     public static <E extends java.lang.Enum<E>> EnumSet<E> fromLong(long bitVector, Class<E> enumClass) {