fix sortInventory crashes the client due to null tag from data components

Author: wendavid552

src/main/java/com/plusls/ommc/impl/feature/sortInventory/SortInventoryHelper.java

@@ -431,8 +431,21 @@ public int compare(ItemStack a, ItemStack b) {
             //#else
             //$$ CustomData dataA = a.get(DataComponents.CUSTOM_DATA);
             //$$ CustomData dataB = b.get(DataComponents.CUSTOM_DATA);
-            //$$ CompoundTag tagA = dataA.copyTag();
-            //$$ CompoundTag tagB = dataB.copyTag();
+            //$$ CustomData dataA = a.get(DataComponents.CUSTOM_DATA);
+            //$$            CustomData dataB = b.get(DataComponents.CUSTOM_DATA);
+            //$$            CompoundTag tagA, tagB;
+            //$$            if (dataA != null) {
+            //$$                tagA = dataA.copyTag();
+            //$$            }
+            //$$            else{
+            //$$                tagA = null;
+            //$$            }
+            //$$            if (dataB != null) {
+            //$$                tagB = dataB.copyTag();
+            //$$            }
+            //$$            else{
+            //$$                tagB = null;
+            //$$            }
             //#endif
 
             if (ShulkerBoxItemHelper.isShulkerBoxBlockItem(a) && ShulkerBoxItemHelper.isShulkerBoxBlockItem(b) &&