message: prevent index error in find_obj sample
diff: @@ -86,6 +86,7 @@ def explore_match(win, img1, img2, kp_pairs, status = None, H = None):
  if status is None:
  status = np.ones(len(kp_pairs), np.bool_)
  + status = status.reshape((len(kp_pairs), 1))
  p1, p2 = [], [] # python 2 / python 3 change of zip unpacking
  for kpp in kp_pairs:
  p1.append(np.int32(kpp[0].pt))
  