(LootMethods) - Add roll_winner_guid to GetItems method (#314)

src/LuaEngine/methods/LootMethods.h

@@ -225,6 +225,7 @@ namespace LuaLoot
      *   - count: quantity of the item
      *   - needs_quest: whether the item requires a quest
      *   - is_looted: whether the item has been looted
+     *   - roll_winner_guid: GUID of the player who won the item roll
      *
      * @return table items : array of item tables
      */
@@ -252,6 +253,9 @@ namespace LuaLoot
             Eluna::Push(L, loot->items[i].is_looted);
             lua_setfield(L, -2, "is_looted");
 
+            Eluna::Push(L, loot->items[i].rollWinnerGUID);
+            lua_setfield(L, -2, "roll_winner_guid");
+
             lua_rawseti(L, tbl, i + 1);
         }