Fix Command19

Signed-off-by: Lixfel <agga-games@gmx.de>

src/de/steamwar/bungeecore/util/Chat19.java

@@ -31,10 +31,11 @@ public class Chat19 extends Chat {
 
     public static void chat(ProxiedPlayer p, String message) {
         if(p.getPendingConnection().getVersion() >= 759) {
+            boolean command = message.startsWith("/");
             Chat19 packet = new Chat19(message);
 
             ByteBuf buf = Unpooled.buffer();
-            writeVarInt(0x04, buf);
+            writeVarInt(command ? 0x03 : 0x04, buf);
             packet.write(buf, ProtocolConstants.Direction.TO_SERVER, p.getPendingConnection().getVersion());
             ((ServerConnection) p.getServer()).getCh().write(new PacketWrapper(packet, buf));
         } else {