message: Directly return after getVoxelByVoxelIndex(...).
diff: @@ -177,8 +177,7 @@ class Layer {
  const VoxelIndex local_voxel_index = getLocalFromGlobalVoxelIndex(
  global_voxel_index, voxels_per_side_);
  Block<VoxelType>& block = getBlockByIndex(block_index);
  - VoxelType& voxel = block.getVoxelByVoxelIndex(local_voxel_index);
  - return &voxel;
  + return &block.getVoxelByVoxelIndex(local_voxel_index);
  }
  inline const VoxelType* getVoxelPtrByGlobalIndex(
  @@ -191,8 +190,7 @@ class Layer {
  const VoxelIndex local_voxel_index = getLocalFromGlobalVoxelIndex(
  global_voxel_index, voxels_per_side_);
  const Block<VoxelType>& block = getBlockByIndex(block_index);
  - const VoxelType& voxel = block.getVoxelByVoxelIndex(local_voxel_index);
  - return &voxel;
  + return &block.getVoxelByVoxelIndex(local_voxel_index);
  }
  FloatingPoint block_size() const { return block_size_; }
  