Core/Network: Optimized packet sending by removing unneccessary memory copying

src/server/game/Maps/Map.cpp

@@ -2682,7 +2682,7 @@ uint32 Map::GetPlayersCountExceptGMs() const
     return count;
 }
 
-void Map::SendToPlayers(WorldPacket const* data) const
+void Map::SendToPlayers(WorldPacket* data) const
 {
     for (MapRefManager::const_iterator itr = m_mapRefManager.begin(); itr != m_mapRefManager.end(); ++itr)
         itr->GetSource()->GetSession()->SendPacket(data);