leaked memory?

 

I have opened position and run follow script:

 

#include <Trade/Trade.mqh>
void OnStart()
{
   int slippage=10;
   CTrade *OrderClose = new CTrade;
   if(OrderClose.PositionClose(_Symbol,slippage*_Point)==true)Print("OK");else Print("false");


}
then I find message "312 bytes of leaked memory" in Experts tab. What dose it means?
 
You should obviously delete dynamical object yourself. See article The Order of Object Creation and Destruction in MQL5

Reason: