Fix exception when giving all materials

src/main/java/emu/nebula/command/commands/GiveAllCommand.java

@@ -45,7 +45,7 @@ public class GiveAllCommand implements CommandHandler {
                 
                 // Check sub type
                 for (ItemDef data : GameData.getItemDataTable()) {
-                    if (!MATERIAL_ITEM_SUBTYPES.contains(data.getItemSubType())) {
+                    if (data.getItemSubType() == null || !MATERIAL_ITEM_SUBTYPES.contains(data.getItemSubType())) {
                         continue;
                     }
                     

src/main/java/emu/nebula/game/inventory/ItemSubType.java

@@ -34,7 +34,9 @@ public enum ItemSubType {
     Honor               (43),
     CharacterYO         (44),
     PlayHead            (45),
-    CharacterSkin                                                (46);
+    CharacterSkin       (46),
+    SouvenirEnergyItem  (47),
+    Build               (48);
 
     @Getter
     private final int value;