Fix a typo

Change-Id: I07ef0598cb9f7bb41f4cdf3e274e01e9b3a33174

internal/ceres/cgnr_solver.cc

diff --git a/internal/ceres/cgnr_solver.cc b/internal/ceres/cgnr_solver.cc
index 2215ab9..17a5f62 100644
--- a/internal/ceres/cgnr_solver.cc
+++ b/internal/ceres/cgnr_solver.cc
@@ -244,7 +244,7 @@
                                     const CompressedRowSparseMatrix& A)
       : options_(std::move(options)),
         cpu_preconditioner_(options_, A),
-        m_(options_->context, cpu_preconditioner_.matrix()) {}
+        m_(options_.context, cpu_preconditioner_.matrix()) {}
   ~CudaJacobiPreconditioner() = default;
 
   void Update(const CompressedRowSparseMatrix& A, const double* D) final {