Clone OptionalInts too

src/main/java/com/comphenix/protocol/reflect/cloning/JavaOptionalCloner.java

@@ -4,6 +4,7 @@
 package com.comphenix.protocol.reflect.cloning;
 
 import java.util.Optional;
+import java.util.OptionalInt;
 
 /**
  * A cloner that can clone Java Optional objects
@@ -18,13 +19,22 @@ public class JavaOptionalCloner implements Cloner {
 
 	@Override
 	public boolean canClone(Object source) {
-		return source instanceof Optional;
+		return source instanceof Optional || source instanceof OptionalInt;
 	}
 
 	@Override
 	public Object clone(Object source) {
+		if (source instanceof Optional) {
 			Optional<?> optional = (Optional<?>) source;
 			return optional.map(o -> wrapped.clone(o));
+		} else if (source instanceof OptionalInt) {
+			// why Java felt the need to make each optional class distinct is beyond me
+			// like why couldn't they have given us at least a common interface or something
+			OptionalInt optional = (OptionalInt) source;
+			return optional.isPresent() ? OptionalInt.of(optional.getAsInt()) : OptionalInt.empty();
+		}
+
+		return null;
 	}
 
 	public Cloner getWrapped() {