Fix minor include and formatting issues.

Change-Id: I14417b775b4d67bba8b0bbbb37fc0b37efc20fbf

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 ec4293b..3d837b3 100644
--- a/internal/ceres/iterative_schur_complement_solver.cc
+++ b/internal/ceres/iterative_schur_complement_solver.cc
@@ -40,9 +40,6 @@
 #include "ceres/block_structure.h"
 #include "ceres/conjugate_gradients_solver.h"
 #include "ceres/implicit_schur_complement.h"
-#include "ceres/linear_solver.h"
-#include "ceres/triplet_sparse_matrix.h"
-#include "ceres/visibility_based_preconditioner.h"
 #include "ceres/internal/eigen.h"
 #include "ceres/internal/scoped_ptr.h"
 #include "ceres/linear_solver.h"

internal/ceres/linear_solver.cc

diff --git a/internal/ceres/linear_solver.cc b/internal/ceres/linear_solver.cc
index 4bfb599..5ddfed0 100644
--- a/internal/ceres/linear_solver.cc
+++ b/internal/ceres/linear_solver.cc
@@ -81,7 +81,7 @@
     default:
       LOG(FATAL) << "Unknown linear solver type :"
                  << options.type;
-	  return NULL;  // MSVC doesn't understand that LOG(FATAL) never returns.
+      return NULL;  // MSVC doesn't understand that LOG(FATAL) never returns.
   }
 }