Fix REntity Metadata

SpigotCore_19/src/de/steamwar/core/ChatWrapper19.java

@@ -37,7 +37,7 @@ public class ChatWrapper19 implements ChatWrapper {
     public Object getDataWatcherPacket(int entityId, Object... dataWatcherKeyValues) {
         ArrayList<DataWatcher.b<?>> nativeWatchers = new ArrayList<>(1);
         for(int i = 0; i < dataWatcherKeyValues.length; i+=2) {
-            nativeWatchers.add((DataWatcher.b<?>) BountifulWrapper.impl.getDataWatcherItem(dataWatcherKeyValues[i], dataWatcherKeyValues[i+1]));
+            nativeWatchers.add(((DataWatcher.Item<?>) BountifulWrapper.impl.getDataWatcherItem(dataWatcherKeyValues[i], dataWatcherKeyValues[i+1])).e());
         }
 
         return new PacketPlayOutEntityMetadata(entityId, nativeWatchers);