Hotfix Testarena NPE

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

FightSystem_Main/src/de/steamwar/fightsystem/record/Recorder.java

@@ -247,6 +247,9 @@ public interface Recorder {
 
     default void blueSchem(int schemId) {
         try {
+            if(schemId == 0)
+                throw new IOException();
+
             write(0xb3, schemId, Schematic.getSchemFromDB(schemId).schemData());
         } catch (IOException e) {
             Bukkit.getLogger().log(Level.SEVERE, "Could not embed schematic", e);
@@ -256,6 +259,9 @@ public interface Recorder {
 
     default void redSchem(int schemId) {
         try {
+            if(schemId == 0)
+                throw new IOException();
+
             write(0xb4, schemId, Schematic.getSchemFromDB(schemId).schemData());
         } catch (IOException e) {
             Bukkit.getLogger().log(Level.SEVERE, "Could not embed schematic", e);