Fix CommandPart for optional parameter at end of command

SpigotCore_Main/src/de/steamwar/command/CommandPart.java

@@ -84,10 +84,6 @@ public class CommandPart {
     }
 
     public void generateArgumentArray(List<Object> current, CommandSender commandSender, String[] args, int startIndex) {
-        if (startIndex >= args.length && varArgType == null) {
-            throw new CommandParseException();
-        }
-
         if (varArgType != null) {
             Object array = Array.newInstance(varArgType, args.length - startIndex);
             for (int i = startIndex; i < args.length; i++) {