Fix ObjectData field

SpigotCore_Main/src/de/steamwar/entity/REntity.java

@@ -382,7 +382,7 @@ public class REntity {
         int index;
         switch (Core.getVersion()) {
             case 8:
-                index = 10;
+                index = 9;
                 break;
             case 9:
             case 14:
@@ -392,8 +392,9 @@ public class REntity {
             case 18:
                 index = 6;
                 break;
+            case 19:
             default:
-                index = 7;
+                index = 4;
                 break;
         }