Fix CG solver options for ITERATIVE_SCHUR, which did not copy min_num_iterations

Change-Id: If31bc53b49ec20426fd438b79b8fa1f69d11e861

internal/ceres/iterative_schur_complement_solver.cc

diff --git a/internal/ceres/iterative_schur_complement_solver.cc b/internal/ceres/iterative_schur_complement_solver.cc
index 6de410b..0cf08fe 100644
--- a/internal/ceres/iterative_schur_complement_solver.cc
+++ b/internal/ceres/iterative_schur_complement_solver.cc
@@ -101,6 +101,7 @@
   // complement matrix with the block diagonal of the matrix F'F as
   // the preconditioner.
   LinearSolver::Options cg_options;
+  cg_options.min_num_iterations = options_.min_num_iterations;
   cg_options.max_num_iterations = options_.max_num_iterations;
   ConjugateGradientsSolver cg_solver(cg_options);
   LinearSolver::PerSolveOptions cg_per_solve_options;