message: calib3d: eliminate 'register' build warning
diff: @@ -631,7 +631,7 @@ void PoseSolver::computeRowAndNullspace(const cv::Matx<double, 9, 1>& r,
  void PoseSolver::nearestRotationMatrix(const cv::Matx<double, 9, 1>& e,
  cv::Matx<double, 9, 1>& r)
  {
  - register int i;
  + int i;
  double l, lprev, det_e, e_sq, adj_e_sq, adj_e[9];
  // e's adjoint
  