a bug in RandomHash2.


URandomHash2.pas

line 267     

 LParentOutputs := Hash(ABlockHeader, ARound - 1, AFoundLastRound);
    if AFoundLastRound > 0 then
      // Previous round was the final round, so just return it's value
      Exit(LParentOutputs); //bug is here


There are 1/4 chances in round 2, returning results,without continue calculating the data behind,
Discarding some nones will result in hundreds of performance gains