anchor.diff:        FCurBlockPos := 0;
         if FCurBlock = FLast then
         begin
  +<<<<<<< HEAD
  +        if Len > MPool.FBlockSize then//һˣҳ˿С
  +          SetSize(FPosition + Len)
  +        else if FPosition + Len > FSize then
  +=======
           if FPosition + Len > FSize then
  +>>>>>>> parent of 9bf7227... Modify DxMemoryStream
             FSize := FPosition + Len;
         end;
       end;
  
positive.code:     FCurBlockPos := 0;
      if FCurBlock = FLast then
      begin
        if FPosition + Len > FSize then
          FSize := FPosition + Len;
      end;
    end;
  
negative.code:       FCurBlockPos := 0;
        if FCurBlock = FLast then
        begin
  <<<<<<< HEAD
          if Count > MPool.FBlockSize then//һ飬ҳ˿С
  =======
          if Count > MPool.FBlockSize then //ѾһĴС
  >>>>>>> parent of 9bf7227... Modify DxMemoryStream
            SetSize(FPosition + Count)
          else if FPosition + Count > FSize then
            FSize := FPosition + Count;
  