error when compire with nil

[thangk48cc]

//Orginal

• (void)setDelegate:(id)newDelegate
  {
  if (newDelegate != self.collapseDelegate)
  {
  self.collapseDelegate = newDelegate;
  [super setDelegate:self.collapseDelegate?self:nil];
  }
  }

//Fixed

• (void)setDelegate:(id)newDelegate
  {

  //add compire nill

  if (newDelegate != nil && newDelegate != self.collapseDelegate)
  {
  self.collapseDelegate = newDelegate;
  [super setDelegate:self.collapseDelegate?self:nil];
  }
  }