Core/Misc: Fix static analysis issues

src/server/game/Groups/Group.cpp

@@ -1567,8 +1567,7 @@ void Group::CountTheRoll(Rolls::iterator rollI, Map* allowedMap)
 
         // remove is_blocked so that the item is lootable by all players
         LootItem* item = &(roll->itemSlot >= roll->getLoot()->items.size() ? roll->getLoot()->quest_items[roll->itemSlot - roll->getLoot()->items.size()] : roll->getLoot()->items[roll->itemSlot]);
-        if (item)
-            item->is_blocked = false;
+        item->is_blocked = false;
     }
 
     RollId.erase(rollI);