Find out why other drops are null

### Eclipse Workspace Patch 1.0
#P L2World-DataPack-HF
Index: data/scripts/handlers/admincommandhandlers/AdminEditNpc.java
===================================================================
--- data/scripts/handlers/admincommandhandlers/AdminEditNpc.java    (revision 165)
+++ data/scripts/handlers/admincommandhandlers/AdminEditNpc.java    (working copy)
@@ -77,7 +77,8 @@
        "admin_add_skill_npc",
        "admin_edit_skill_npc",
        "admin_del_skill_npc",
-       "admin_log_npc_spawn"
+       "admin_log_npc_spawn",
+       "admin_clone_drop_category"
    };

    @Override
@@ -356,6 +357,70 @@
                activeChar.sendMessage("Usage: //del_skill_npc <npc_id> <skill_id>");
            }
        }
+       else if (command.startsWith("admin_clone_drop_category"))
+       {
+           try
+           {
+               StringTokenizer st = new StringTokenizer(command, " ");
+               st.nextToken();
+               int npcId = Integer.parseInt(st.nextToken());
+               int cloneFromCat = Integer.parseInt(st.nextToken());
+               int clonedCat = Integer.parseInt(st.nextToken());
+
+               if (cloneFromCat == clonedCat)
+               {
+                   activeChar.sendMessage("<category_to_clone_from> and <cloned_category> must NOT match.");
+                   return false;
+               }
+
+               //NpcTable.getInstance().reloadNpc(npcId);
+
+               if (NpcTable.getInstance().getTemplate(npcId) == null)
+               {
+                   activeChar.sendMessage("Template for npcId:"+npcId+" not found.");
+                   return false;
+               }
+
+               if (NpcTable.getInstance().getTemplate(npcId).getDropData() == null)
+               {
+                   activeChar.sendMessage("DropCategory at template for npcId:"+npcId+" not found.");
+                   return false;
+               }
+
+               L2DropCategory cat = null;
+               for (L2DropCategory dc : NpcTable.getInstance().getTemplate(npcId).getDropData())
+               {
+                   if (dc.getCategoryType() == cloneFromCat)
+                       cat = dc;
+               }
+
+               if (cat == null)
+               {
+                   activeChar.sendMessage("<category_to_clone_from> not found.");
+                   return false;
+               }
+
+               int i = 0;
+               int j = 0;
+               for (L2DropData dd : cat.getAllDrops())
+               {
+                   if (dd == null)
+                   {
+                       j++;
+                       continue;
+                   }
+                   addDropData(activeChar, npcId, dd.getItemId(), dd.getMinDrop(), dd.getMaxDrop(), clonedCat, (int)dd.getChance());
+                   i++;
+               }
+
+               activeChar.sendMessage(i+" DropData(s) successfuly cloned from category "+cloneFromCat+" to category "+clonedCat+". "+j+" drops were null.");
+           }
+           catch (Exception e)
+           {
+               e.printStackTrace();
+               activeChar.sendMessage("Usage: //clone_drop_category <npc_id> <category_to_clone_from> <cloned_category>");
+           }
+       }

        return true;
    }