Fix Command19

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

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

@@ -32,7 +32,7 @@ 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);
+            Chat19 packet = new Chat19(command ? message.substring(1) : message);
 
             ByteBuf buf = Unpooled.buffer();
             writeVarInt(command ? 0x03 : 0x04, buf);