More lint cleanups and breakage fixes.

The previous CL was a premature submit due to lack of coffee.

Change-Id: Id425d0ef332f569a954f0413e6b1ae6087f40f30
diff --git a/internal/ceres/suitesparse.cc b/internal/ceres/suitesparse.cc
index 8a52631..3cafe07 100644
--- a/internal/ceres/suitesparse.cc
+++ b/internal/ceres/suitesparse.cc
@@ -287,7 +287,7 @@
                 "LL' has tiny absolute value.";
       return LINEAR_SOLVER_FAILURE;
     case CHOLMOD_OK:
-      if (cholmod_message != 0) {
+      if (cholmod_status != 0) {
         return LINEAR_SOLVER_SUCCESS;
       }