1 files changed, 3 insertions, 3 deletions
diff --git a/extern/ceres/internal/ceres/dynamic_compressed_row_sparse_matrix.cc b/extern/ceres/internal/ceres/dynamic_compressed_row_sparse_matrix.cc
index 936e682b763..7185e14a411 100644
--- a/extern/ceres/internal/ceres/dynamic_compressed_row_sparse_matrix.cc
+++ b/extern/ceres/internal/ceres/dynamic_compressed_row_sparse_matrix.cc
@@ -1,5 +1,5 @@
 // Ceres Solver - A fast non-linear least squares minimizer
-// Copyright 2015 Google Inc. All rights reserved.
+// Copyright 2022 Google Inc. All rights reserved.
 // http://ceres-solver.org/
 //
 // Redistribution and use in source and binary forms, with or without
@@ -70,8 +70,8 @@ void DynamicCompressedRowSparseMatrix::Finalize(int num_additional_elements) {
 
   // Count the number of non-zeros and resize `cols_` and `values_`.
   int num_jacobian_nonzeros = 0;
-  for (int i = 0; i < dynamic_cols_.size(); ++i) {
-    num_jacobian_nonzeros += dynamic_cols_[i].size();
+  for (const auto& dynamic_col : dynamic_cols_) {
+    num_jacobian_nonzeros += dynamic_col.size();
   }
 
   SetMaxNumNonZeros(num_jacobian_nonzeros + num_additional_elements);