Hotfix Sign update Exception

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

FightSystem_Main/src/de/steamwar/fightsystem/utils/TechHider.java

@@ -183,7 +183,7 @@ public class TechHider {
                     return;
 
                 // 9 == Set sign text
-                if(packet.getBytes().read(0) != 9)
+                if(packet.getIntegers().read(0) != 9)
                     return;
 
                 event.setCancelled(true);